OPINION
The government challenges, by way of this interlocutory appeal, the district court’s Order suppressing evidence seized pursuant to search warrants from the residences of drug conspiracy defendants Darnell Williams and Larry Thomas.
See United States v. McCoy,
No. 1:06-cr-00449 (D.Md. Oct. 24, 2007). In so ruling, the district court recognized that the government had conceded there was no probable cause to support the search warrants, and it rejected the government’s position that the seized evidence was nevertheless admissible under the good faith exception to the Fourth Amendment exclusionary rule, as articulated in
United States v. Leon,
I.
A.
On August 31, 2006, Special Agent Paul Neikirk of the Drug Enforcement Administration, Baltimore District Office, applied to a Maryland state court for a “Search and Seizure Warrant” relating to the “Premise” 3516 Sandpiper Court, Edge-wood, Maryland (the “Sandpiper Court warrant”). See J.A. 3. 1 The warrant application also refers to the “Person” Darnell Williams. Id. In support of the application, Neikirk outlined his expertise, including involvement in at least thirty drug trafficking investigations, the arrests of more than 500 drug suspects, the making of at least ten affidavits in support of search warrants, and the execution of more than 100 such warrants. See id. at 5. He also submitted a twenty-page affidavit (the “Sandpiper Court affidavit”), plus a single-page exhibit listing property to be seized. On the first page of the Sandpiper Court affidavit, Neikirk again refers to the “Person” Darnell Williams and the “Premise” 3516 Sandpiper Court, and he avers that “[y]our Affiant believes that probable cause exists for the issuance of said warrant for these premise(s) ... which are being used for the illegal use, storage, sale, packaging and concealment of controlled dangerous substance[s].” Id. at 7. Later in the Sandpiper Court affidavit, Neikirk lists 3516 Sandpiper Court as Williams’s address, see id. at 9-10, and specifically asserts that “[t]his location is believed to be the primary residence of Darnell Williams,” id. at 25. The Sandpiper Court affidavit also includes such identifying information as Williams’s date of birth and Social Security number. See, e.g., id. at 9.
The bulk of the Sandpiper Court affidavit details the investigation into Williams and his alleged coconspirators (including Thomas), which investigation involved, inter alia, a confidential informant, controlled purchases, intercepted phone calls, and physical surveillance. The Sandpiper Court affidavit reflects, for example, the following:
• After identifying Thomas “as a mid-level narcotic dealer,” the confidential informant made controlled purchases of “multiple ounces of cocaine from Thomas on numerous occasions from January 2006-May 2006,” J.A. 7;
• The subsequent court-approved interception of calls made on a phone utilized by Thomas led Special Agent Neikirk to secure court authorization to intercept calls made on eight other phones, including two cell phones used by Williams, see id. at 7-11;
• Between July 9, 2006, and August 25, 2006, investigators intercepted fifteen calls involving Williams that Neikirk believed, based on his training and experience, to be “drug pertinent,” see id. at 14-25; and
• In August 2006, investigators conducted physical surveillance of Williams meeting with suspected drug suppliers in Houston, Texas, after learning that Williams had made arrangements to fly there, see id. at 23.
*314 According to the Sandpiper Court affidavit, the investigation “established that Darnell Williams is managing an ongoing drug distribution network that operates throughout the United States of America[,][i]ncluding[ ] Maryland, Georgia, South Carolina and Texas, with at least one ultimate street level distribution point being in the Baltimore, Maryland Metropolitan area.” Id. at 12. The Sandpiper Court affidavit also reflects that Williams pleaded guilty in February 1994 in a Maryland state court to possession with intent to distribute controlled dangerous substances, as well as controlled dangerous substance distribution with a firearm, and that there had been numerous other state criminal charges brought against him between 1993 and 2000. See id. at 13-14.
The Sandpiper Court affidavit does not specify any particular evidence — such as evidence gathered from intercepted phone calls or physical surveillance — linking the Sandpiper Court dwelling to drug trafficking activity. Special Agent Neikirk asserts therein, however, that
[yjour Affiant knows based on his training and experience that drug dealers tend to maintain quantities of narcotics, firearms and proceeds from drug sales and records of drug transactions in their houses ... for safekeeping. Your Affi-ant knows based on his training and experience that drug dealers often utilize safes and other locked containers in their residence to secure quantities of drugs, firearms and proceeds from drug sales.... Your Affiant has also learned that narcotic dealers tend to “stash” quantities of narcotics, monies, and handguns in their houses.
J.A. 12. This training-and experience-based knowledge, together with the evidence of drug trafficking gathered against Williams, gave rise to Neikirk’s “belie[f] that probable cause exists that Darnell Williams is storing controlled dangerous substances, firearms, proceeds from drug transactions and business records thereof at 3516 Sandpiper C[ourt].” Id. at 13; see also id. at 25 (“[A]s a result of your Affi-ant[’]s involvement in this investigation, and his expertise and experience in the investigation of dangerous drugs, your Af-fiant believes that there is presently concealed within the aforesaid dwelling ... items constituting] evidence that relates to the illegal distribution and possession with the intent to distribute controlled dangerous substances.... ”).
At the close of the Sandpiper Court affidavit, Special Agent Neikirk seeks authorization for a “no knock entry,” explaining that “[t]his location is believed to be the primary residence of Darnell Williams,” that “it is possible that he could be home at the time the warrant is executed,” and that Williams has a history of violence (including prior arrests for assault with intent to murder and various firearms offenses) indicating a risk to the executing officers. J.A. 25-26. Finally, Neikirk reiterates that, “[a]s a result of the above listed [intercepted phone] calls and probable cause corroborated from the confidential source, your Affiant believes that sufficient probable cause exists that the narcotics laws of Maryland are being violated with the dwelling of 3516 Sandpiper Court.” Id. at 26.
At the same time he sought the Sandpiper Court warrant (on August 31, 2006), Special Agent Neikirk also applied to the Maryland state court for a “Search and Seizure Warrant” relating to the “Premise” 135 Baltimore Avenue, Baltimore, Maryland (the “Baltimore Avenue warrant”). See J.A. 30. That warrant application refers to the “Person” Larry Thomas. Id. In support of the application, Neikirk again outlined his expertise, and he submitted a seventeen-page affidavit (the *315 “Baltimore Avenue affidavit”), plus a single-page exhibit listing property to be seized. The first page of the Baltimore Avenue affidavit refers to the “Person” Larry Thomas and the “Premise” 135 Baltimore Avenue, and contains an assertion of probable cause identical to that found in the Sandpiper Court affidavit. Id. at 34 (‘Tour Affiant believes that probable cause exists for the issuance of said warrant for these premise(s) ... which are being used for the illegal use, storage, sale, packaging and concealment of controlled dangerous substance[s]....”) Also on the first page of the Baltimore Avenue affidavit, Neikirk lists 135 Baltimore Avenue as Thomas’s address, see id., and later therein Neikirk specifically asserts that “[t]his location is believed to be the primary residence of Larry Thomas,” id. at 50. 2 The Baltimore Avenue affidavit also includes such identifying information as Thomas’s date of birth and Social Security number. See, e.g., id. at 34.
The majority of the Baltimore Avenue affidavit details the investigation into Thomas, Williams, and their alleged cocon-spirators. Specific to Thomas, the Baltimore Avenue affidavit (like the Sandpiper Court affidavit) reflects that he was identified as a mid-level drug dealer by the confidential informant, that the informant made controlled purchases of cocaine from Thomas between January and May 2006, and that Neikirk thereafter secured authorization to intercept calls made on a phone utilized by Thomas, leading to the court-approved interception of calls made on eight other phones. See J.A. 34-38. The Baltimore Avenue affidavit also provides information about approximately two dozen intercepted calls involving Thomas that Neikirk believed to relate to drug transactions. See id. at 41-49. The Baltimore Avenue affidavit reflects that Thomas last reported earned wages in 2001, and that he had been convicted in Maryland state courts on three separate occasions in 2000 of controlled dangerous substance and assault offenses. See id. at 40.
Like the Sandpiper Court affidavit, the Baltimore Avenue affidavit does not specify any particular evidence linking the dwelling to be searched to drug activity. The Baltimore Avenue affidavit includes, however, an identical assertion of knowledge, based on Special Agent Neikirk’s training and experience, “that drug dealers tend to maintain quantities of narcotics, firearms and proceeds from drug sales and records of drug transactions in their houses ... for safekeeping.” J.A. 39. Based on this knowledge and the evidence of Thomas’s drug trafficking, Neikirk concludes in the Baltimore Avenue affidavit “that probable cause exists that Larry Thomas is storing controlled dangerous substances, firearms, proceeds from drug transactions and business records thereof at 135 Baltimore Avenue.” Id. at 40; see also id. at 49 (“[A]s a result of your Affi-ant’s involvement in this investigation, and his expertise and experience in the investigation of dangerous drugs, your Affiant believes that there is presently concealed within the aforesaid dwelling ... items constituting] evidence that relates to the illegal distribution and possession with the intent to distribute controlled dangerous substances.... ”).
In closing, Special Agent Neikirk seeks permission in the Baltimore Avenue affidavit for a “no knock entry,” specifying that “[t]his location is believed to be the pri *316 mary residence of Larry Thomas” and detailing the potential danger posed by him (including the fact that he was heard “firing a handgun repeated times” during intercepted phone calls and. threatening on one such call to “shoot his way out”). J.A. 49-50. Lastly, Neikirk asserts that, “[a]s a result of the above listed [intercepted phone] calls and probable cause corroborated from the confidential source, your Affiant believes that sufficient probable cause exists that the narcotics laws of Maryland are being violated with the dwelling of 135 Baltimore Avenue.” Id. at 50.
On August 31, 2006, after reviewing and initialing each page of the respective supporting affidavits, the Maryland state court approved both the Sandpiper Court warrant and the Baltimore Avenue warrant. The warrants were executed on September 11, 2006. From the Sandpiper Court dwelling, officers seized $295,000 in cash. From the Baltimore Avenue dwelling, officers seized a firearm, cocaine residue, and various items commonly used in drug distribution, such as a digital scale and numerous empty capsules. 3
B.
A grand jury in the District of Maryland indicted Williams and Thomas, along with other alleged coconspirators, on one count of conspiracy to distribute cocaine, in contravention of 21 U.S.C. § 846. Thereafter, Williams filed a motion to suppress evidence seized from the Sandpiper Court dwelling, and Thomas filed a motion to suppress evidence seized from the Baltimore Avenue dwelling. The district court conducted a hearing on the motions on October 12, 2007.
On October 24, 2007, the district court issued its Order granting the motions to suppress, as well as a Memorandum Opinion (the “Opinion”) explaining its ruling.
4
The court observed in the Opinion that the government conceded both in its response to the motions and at the October 12, 2007 hearing that there was no probable cause to support the search warrants, i.e., “that there was insufficient information outlined in the supporting affidavits connecting 3516 Sandpiper Court and 135 Baltimore Ave[nue] with the alleged criminal activity.” Opinion 2. The court then recognized that the government sought “to avoid suppression because of the good faith exception outlined in
United States v. Leon,
The government timely noted this interlocutory appeal. We possess jurisdiction pursuant to the provisions of 18 U.S.C. § 3731. 5
*317 II.
On appeal, the government contends that the district court erred in granting the motions to suppress because, notwithstanding its concession to the contrary, the Sandpiper Court and Baltimore Avenue warrants were supported by probable cause. Alternatively, the government contends that the seized evidence is admissible under the good faith exception to the Fourth Amendment exclusionary rule articulated in
United States v. Leon,
A.
As the Supreme Court instructed in
Leon,
“a court should not suppress the fruits of a search conducted under the authority of a warrant, even a ‘subsequently invalidated’ warrant, unless ‘a reasonably well trained officer would have known that the search was illegal despite the magistrate’s authorization.’ ”
United States v. Bynum,
The
Leon
Court admonished that searches conducted “pursuant to a warrant will rarely require any deep inquiry into reasonableness, for a warrant issued by a magistrate normally suffices to establish that a law enforcement officer has acted in good faith in conducting the search.”
• First, where “the magistrate or judge in issuing a warrant was misled by information in an affidavit that the affiant knew was false or would have known was false except for his reckless disregard of the truth,” id. at 923,104 S.Ct. 3405 ;
• Second, where “the magistrate acted as a rubber stamp for the officers and so ‘wholly abandoned’ his detached and neutral ‘judicial role,’ ” Bynum,293 F.3d at 195 (quoting Leon,468 U.S. at 923 ,104 S.Ct. 3405 );
• Third, where a supporting affidavit is “so lacking in indicia of probable cause as to render official belief in its exis *318 tence entirely unreasonable,” Leon,468 U.S. at 923 ,104 S.Ct. 3405 (internal quotation marks omitted); and
• Fourth, where “a warrant [is] so facially deficient — ie., in failing to particularize the place to be searched or the things to be seized — that the executing officers cannot reasonably presume it to be valid,” id.
“In any of these four circumstances, then, the
Leon
good faith exception does not apply.”
Perez,
B.
Here, the district court concluded that application of the
Leon
good faith exception was barred by the existence of the third circumstance, i.e., that the Sandpiper Court and Baltimore Avenue affidavits were “so lacking in indicia of probable cause as to render official belief in its existence entirely unreasonable.”
Leon,
1.
We begin our assessment with the district court’s ruling on the criminal activity-dwelling nexus. The pertinent question in this regard is whether the Sandpiper Court and Baltimore Avenue affidavits were “so lacking in indicia of probable cause” tying the targeted dwellings to criminal activity “as to render official belief in its existence entirely unreasonable.”
Leon,
In these circumstances, we first address whether the district court properly discounted Neikirk’s assertion of training-and experience-based knowledge to tie Williams’s and Thomas’s drug trafficking activities to their residences. According to the court, “[a] lack of actual evidence in the affidavits cannot be remedied by the claim — asserted in both supporting affidavits — that ‘drug dealers tend to maintain quantities of narcotics, firearms and proceeds from drug sales and records of drug transactions in their houses ... for safekeeping.’ ” Opinion 5 (quoting Sandpiper Court and Baltimore Avenue affidavits (J.A. 12, 39)). For this proposition, the court relied on its own prior suppression ruling in
United States v. Cotton,
No. 1:05—cr-00409,
Simply put, the district court’s view is directly at odds with our precedent. We have consistently determined that there was probable cause to support search warrants — and not merely sufficient indicia of probable cause to justify application of the
Leon
good faith exception — in similar circumstances. That is, we have upheld warrants to search suspects’ residences and even temporary abodes on the basis of (1) evidence of the suspects’ involvement in drug trafficking combined with (2) the reasonable suspicion (whether explicitly articulated by the applying officer or implicitly arrived at by the magistrate judge) that drug traffickers store drug-related evidence in their homes.
See United States v. Grossman,
[w]hen issuing a warrant and making a probable cause determination, judges are to use a “totality of the circumstances analysis.” This standard is not defined by bright lines and rigid boundaries. Instead, the standard allows a magistrate judge to review the facts and *320 circumstances as a whole and make a common sense determination of whether “there is a fair probability that contraband or evidence of a crime will be found in a particular place.” The magistrate judge’s decision in this regard is one we review with great deference.
Grossman,
In light of our precedent, the district court erroneously discounted Special Agent Neikirk’s assertion of training-and experience-based knowledge to tie Williams’s and Thomas’s drug trafficking activities to their residences. Had the court given due consideration to Neikirk’s assertion, together with the extensive evidence of Williams’s and Thomas’s drug trafficking activities detailed in the Sandpiper Court and Baltimore Avenue affidavits, it could not have concluded that the affidavits were “bare bones” with respect to the criminal activity-dwelling nexus.
See Wilhelm,
*321
Finally, we assess the district court’s ruling with respect to the defendant-dwelling nexus. On this question, the district court observed that in contrast to the scenario in this Court’s
Williams
decision— wherein we recognized that the supporting affidavit “ ‘contain[ed] evidence that [the defendant] was currently residing in the’ ” targeted motel room — such scenario was “not the case here.” Opinion 5 n. 4 (quoting
Williams,
We recognize that the Sandpiper Court and Baltimore Avenue affidavits contain bare assertions that the targeted dwellings were Williams’s and Thomas’s current residences, without explicitly describing how Special Agent Neikirk came to believe that was so. Nonetheless, we cannot say that the affidavits were “so lacking in indicia of probable cause” that the targeted dwellings were the current residences of Williams and Thomas “as to render official belief in its existence entirely unreasonable.”
Leon,
In these circumstances, we are constrained to conclude that the district court erred in refusing to apply the
Leon
good faith exception in the defendant-dwelling nexus aspect of its suppression ruling.
Cf. United States v. Van Shutters,
[t]he focus in a warrant application is usually on whether the suspect committed a crime and whether evidence of the crime is to be found at his home or business. That hardly makes the address unimportant: to invade the wrong location is a serious matter. But so long as the affidavit itself asserts a link between the suspect and the address, it is easy to understand how both the officer applying for the warrant and the magistrate might overlook a lack of detail on a point often established by the telephone book or the name on a mailbox.
III.
Pursuant to the foregoing, we reverse the district court’s October 24, 2007 Order granting Williams’s and Thomas’s motions to suppress, and remand for such other and further proceedings as may be appropriate.
REVERSED AND REMANDED
Notes
. Citations herein to “J.A. — ” refer to the contents of the Joint Appendix filed by the parties in this appeal.
. The Baltimore Avenue affidavit vaiyingly refers to the Baltimore Avenue residence as being located in Baltimore, Maryland, and Dundalk, Maryland (an unincorporated community in Baltimore County). The parties do not contend, however, that these varying references have any significance to the propriety of the district court's suppression ruling.
. Although unnecessary to the resolution of the issues in this appeal, we observe that it is undisputed that, at the time the search warrants were executed, Williams was residing in the Sandpiper Court dwelling, and Thomas was living in the Baltimore Avenue dwelling.
. The Order is found at J.A. 57-58, and the Opinion is found at J.A. 59-64.
.In accordance with the jurisdictional predicate of 18 U.S.C. § 3731, the United States Attorney has certified that this interlocutory appeal "is not taken for purpose of delay" and that the excluded evidence “is a substantial proof of a fact material in the proceeding.”
. We note that the district court misidentified the third circumstance barring application of the Leon good faith exception, using the following language: "when the affidavit does not provide the magistrate with a substantial basis for determining the existence of probable cause.” Opinion 3 (internal quotation marks omitted). As we explained in Bynum,
" '[substantial basis’ provides the measure for determination of whether probable cause exists in the first instance. If a lack of a substantial basis also prevented application of the Leon objective good faith exception, the exception would be devoid of substance. In fact, Leon states that the third circumstance prevents a finding of objective good faith only when an officer's affidavit is “so lacking in indicia of probable cause as to render official belief in its existence entirely unreasonable.” This is a less demanding showing than the "substantial basis” threshold required to prove the existence of probable cause in the first place.
. The district court suggested — as did this Court in
Wilhelm
— that, because of the “bare bones” nature of the affidavits, the application of the
Leon
good faith exception was barred by the existence of the second circumstance, i.e., that the magistrate judge acted as a rubber stamp for the officer in approving the warrants.
See
Opinion 3-4;
see also Wilhelm,
. The government did not appeal the district court’s suppression ruling in
Cotton.
The defendant, however, appealed from the court's refusal to suppress other evidence, and we affirmed in an unpublished per curiam opinion.
See United States v. Cotton,
No. 06-4530,
. Notably, the district court acknowledged our
Williams
decision in its Opinion. The court rejected
Williams,
however, on the ground, inter alia, that it “dealt with whether a sufficient nexus existed in order to establish probable cause, a point that had been conceded in this case.” Opinion 5 n. 4. Of course, even accepting that the government irrevocably conceded the issue of whether the Sandpiper Court and Baltimore Avenue warrants were supported by probable cause,
Williams
is yet entirely relevant to the issue of whether the
Leon
good faith exception applies, i.e., whether the supporting affidavits were "so lacking in indicia of probable cause” tying the targeted dwellings to criminal activity "as to render official belief in its existence entirely unreasonable.”
Leon,
. To the extent that Williams and Thomas argue on appeal that the Sandpiper Court and Baltimore Avenue affidavits failed to establish probable cause that they were engaged in drug trafficking, we disagree.
. For the criminal activity-dwelling nexus aspect of its suppression ruling, the district court did rely on one of our decisions,
United States v. Lalor,
. We find it unnecessary to accept the government's invitation to consider the October 12, 2007 hearing testimony of Special Agent Neikirk in which he explained to the district court how he came to believe that the targeted dwellings were Williams's and Thomas’s residences.
See Bynum,
