Co-defendants-appellants Tomás Gareia-Carrasquillo, José R. Claudio-Garcia, and Reynaldo González-Rivera were convicted of multiple counts involving the possession of drugs and firearms. On appeal, Garcia-Carrasquillo and Claudio-Garcia challenge the sufficiency of the evidence against them, and González-Rivera challenges various aspects of his sentence. After careful consideration, we affirm Garcia-Carras-quillo’s and Claudio-Garcia’s convictions, but we vacate González-Rivera’s sentence and remand for re-sentencing due to the inadequacy of the district court’s explanation for selecting the sentence imposed.
I. Background
A. The Scene of the Crime
On May 9, 2003, at approximately 5:45 p.m., Agents Héctor Valentin and Nelson González-Rodríguez of the Puerto Rico Police Department’s Special Arrests and Extraditions Division established surveillance of a residence in the Rio Grande area of northeastern Puerto Rico, in relation to two local felony arrest warrants for Gar-cía-Carrasquillo and a fugitive arrest warrant for Claudio-Garcia. 1 The split-level house consisted of the main residence on the upper level, and a small ground-level apartment accessed by a door under a carport at the front of the house. The carport stood over a driveway that led to a gate and then out to the road in front of the house. The agents parked their unmarked car on the road approximately 100 meters up a hill from the house, where they could observe activity around the house with binoculars. From their vantage point, they could see a Ford Bronco parked under the carport at the front of the house. They could not see the door to the ground-level apartment located behind the Bronco, nor could they see a short staircase on the left side of the carport. 2 They could, however, see the staircase leading to the main entrance on the upper level of the house.
Around two hours later, a stolen Mazda Protegé 3 pulled up and parked on the road in front of the house, outside a gate across the driveway. Gareia-Carrasquillo and Claudio-Garcia exited the vehicle and entered the carport, presumably to enter the ground-level apartment at the rear of the carport, though it is unclear whether the agents actually saw the men enter, or later exit, through the door to the apartment. 4 *127 Fifteen minutes later, Garcia-Carrasquillo walked out from under the carport carrying an assault rifle, which he placed in the trunk of the Mazda Protegé. He then returned to the carport.
At this point, the agents notified their supervisor, Lieutenant Herminio Díaz, of the situation. Lieutenant Diaz mobilized the SWAT team and posted two agents, José Nevárez Ortiz and Richard Carrera, at the back of the house. As the SWAT team approached the house, José David Cruz-González, the owner of the house, who was somewhere outside the gate across the driveway in front of the house, 5 ran through the gate toward the house shouting that the police were there. The three co-defendants in the case, Garcia-Carrasquillo, Claudio-Gareía, and Gonzá-lez-Rivera, then ran out of the ground-level apartment and joined Cruz-González in fleeing towards the back of the house.
At the back of the house, the four men jumped over a fence and continued to run. Agent Nevárez shouted for the men to stop and told them they were under arrest. The fleeing men and the officers then exchanged gunfire; González-Rivera was shot in the leg. The men continued to run and exchange gunfire with the pursuing police until the four men fell into a large hole in the ground, 6 where they were apprehended and arrested. The three co-defendants were each found with loaded firearms on their persons; however, no drugs or paraphernalia were found on any of the defendants at the time of their arrest.
Meanwhile, back at the house, the SWAT team, Lieutenant Diaz, and Agent Valentin searched the ground-level apartment, where they found a large amount of cocaine and cocaine base (crack cocaine), a small amount of marijuana, and assorted drug paraphernalia, including a stove for cooking crack cocaine and items used to break up cocaine rocks. The cocaine base was packaged in approximately 972 vials, which were placed in plastic bags labeled by drug distribution point. The Mazda Protegé was taken to the police station after the arrest; when the police opened the trunk, they found an AR-15 rifle along with the AK-47 that the agents had seen Garcia-Carrasquillo put there during their surveillance. The police did not take any fingerprints from the drugs, paraphernalia, or firearms recovered from the apartment or the vehicle, nor from the firearms found on the defendants at the time of their arrest.
B. Legal Proceedings
On May 10, 2003, the defendants were taken before a local magistrate judge for a probable cause hearing. After the judge advised the defendants of their right to remain silent, Garcia-Carrasquillo voluntarily disclosed that all of the drugs and firearms seized the previous day belonged to him.
On December 17, 2003, a grand jury returned a seven-count Superseding Indictment against the defendants. 7 Counts One and Two charged that all three defendants, aiding and abetting each other, *128 knowingly possessed with the intent to distribute 96.87 grams of cocaine base and 299.96 grams of cocaine, respectively, in violation of 21 U.S.C. § 841(a)(1). Count Three charged Garcia-Carrasquillo with knowingly possessing certain firearms in furtherance of a drug trafficking crime in violation of 18 U.S.C. § 924(c)(1). Count Four charged all three defendants with knowingly using, carrying, and discharging certain firearms in relation to a drug trafficking crime in violation of 18 U.S.C. § 924(e)(l)(A)(iii), (C)(i). Counts Five and Six charged Garcia-Carrasquillo and Gon-zález-Rivera, respectively, with being a felon in possession of certain firearms in violation of 18 U.S.C. § 922(g)(1). Count Seven charged Claudio-Garcia with being a fugitive in possession of certain firearms, also in violation of 18 U.S.C. § 922(g)(2).
The defendants were tried over nine days in March and April of 2004. At the close of the government’s case, the defendants moved for judgments of acquittal on the ground of insufficient evidence; the district court denied the motions. The court also denied the defendants’ renewed motions for judgment of acquittal the following day. On April 22, 2004, a jury acquitted all three defendants of Count Four, and also acquitted González-Rivera of Count Six, but found the three defendants guilty on all other counts as charged.
On April 5 and 7, 2005, the district court sentenced the three defendants. Only González-Rivera challenges his sentence, and therefore his is the only sentence we will discuss in detail. 8 González-Rivera’s presentence report (“PSR”) calculated an initial base offense level of 32 pursuant to U.S.S.G. § 2D1.1, after converting the quantities of cocaine base and cocaine powder into an equivalent quantity of marijuana using the Drug Equivalency Table. The PSR also recommended a two-level enhancement for possession of a firearm in relation to a drug trafficking offense, U.S.S.G. § 2Dl.l(b)(l), and another two-level increase for “recklessly creat[ing] a substantial risk of death or serious bodily injury to another person in the course of fleeing from a law enforcement officer,” id. § 3C1.2. Utilizing González-Rivera’s criminal history category of TV, the PSR calculated an advisory guideline range of 262 to 327 months imprisonment.
González-Rivera objected to the PSR on two grounds: (1) that the two recommended enhancements were inapplicable because the jury acquitted him of all firearms charges, and therefore application of the enhancements would violate his Sixth Amendment right under
Blakely v. Washington,
The government responded by arguing that Blakely did not apply to the federal sentencing guidelines. The probation of *129 ficer also responded to the defendant’s objections, arguing that even though Gon-zález-Rivera had been acquitted of the firearms charges, the corresponding enhancement could still be applied pursuant to U.S.S.G. § IB 1.3 because he aided and abetted others who were convicted of possessing firearms during the commission of the same offense. The probation officer also argued that the obstruction of justice enhancement applied because González-Rivera created a substantial risk of injury to others in the course of fleeing from the police, by acting with the other defendants who were in possession of firearms.
At González^Rivera’s sentencing hearing, defense counsel first presented mitigating factors, including the terrible devastation suffered by González-Rivera when his brother, working in the United States, shot and killed his work supervisor; and González-Rivera’s dramatic spiritual awakening, evidenced by the fact that he is now serving as a pastor at his correctional facility. González-Rivera’s counsel then reiterated his objections to the PSR, and requested a sentence of 168 months, which was the low end of the 168 to 210 months guidelines range without application of the two recommended enhancements.
The government argued that the court should apply the two enhancements and impose a sentence at the top of the guidelines range due to the large amounts of drugs and guns seized and the defendant’s attempt to flee the scene. The government also noted González-Rivera’s criminal history, which indicated that he “lived a life of crime” from 1996 to 2003, and his lack of a repentant statement with respect to the instant crime.
After hearing the two sides’ arguments, the district court imposed a sentence of 210 months imprisonment for each count, to run concurrently, followed by supervised release for five years as to Count One and three years as to Count Two, to run concurrently. 10 The district court explained:
The Court has considered all the applicable adjustments under the now Advisory Federal Sentencing Guidelines, as well as the other sentencing factors set forth in 18 [U.S.C. § ] 3553(a), namely the nature and circumstances of the offenses and defendant’s history and characteristics, the need to promote respect for the law and provide just punishment in light of the seriousness of the offense, deterrence, the protection of the public from further crimes of the defendant, rehabilitation, and the need to avoid unwarranted sentence disparities among defendants with similar records who have been found guilty of similar conduct.
II. Sufficiency of the Evidence
García-Carrasquillo and Claudio-Garcia both appeal their convictions on the ground that there was insufficient evidence linking them to the drugs and paraphernalia found in the house from which they fled before being arrested.
See
Fed.R.Crim.P. 29 (“[T]he court on the defendant’s motion must enter a judgment of acquittal of any offense for which the evidence is insufficient to sustain a conviction.”). We review sufficiency of the evidence challenges
de novo,
affirming the conviction if, after viewing all the evidence in the light most favorable to the government and indulging all reasonable inferences in the government’s favor, a rational factfinder could conclude that the prosecution proved all elements of the crime beyond a reasonable
*130
doubt.
United States v. Boulerice,
In order to prove possession with intent to distribute, the government must show that the defendants knowingly and intentionally possessed, either actually or constructively, a controlled substance with the specific intent to distribute.
United States v. López-López,
In order to prove aiding and abetting, the government must first establish the commission of the offense by the principal, and then prove that “the defendant consciously shared the principal’s knowledge of the underlying criminal act, and intended to help the principal.”
United States v. Henderson,
We can quickly dispose of Garcia-Carrasquillo’s claim that there was insufficient evidence to support his conviction for possession. The day after the defendants were arrested, they were taken before a state magistrate judge for a probable cause hearing. Although there was no written record of that hearing, Agent Valentin testified at trial that after the magistrate advised the defendants of their right to remain silent, Garcia-Carrasquillo voluntarily admitted that all the weapons and drugs seized from the house were his. 11 His admission is unquestionably sufficient to support his conviction. 12
The sufficiency of the evidence against Claudio-Garcia is a much closer question. He argues that there was insufficient evidence of his constructive possession because there was no evidence that he had dominion or control over the drugs. He also challenges the sufficiency of the *131 evidence of aiding and abetting, arguing that there was no evidence that he willfully-intended to help Garcia-Carrasquillo in the crime of possession with intent to distribute. Claudio-Garcia asserts that the evidence proves, at most, that he was merely present at the scene.
Having affirmed the sufficiency of the evidence that Garcia-Carrasquillo was the principal, we need only satisfy ourselves that there was evidence presented from which a rational juror could infer that Claudio-Garcia intended to aid Garcia-Carrasquillo in his crime of possession with intent to distribute. If the government successfully proves aiding and abetting, it does not need to prove that Claudio-Garcia himself actually or constructively possessed the drugs, since either theory of guilt alone would sustain his conviction.
See
18 U.S.C. § 2(a) (“Whoever commits an offense against the United States or aids, abets, counsels, commands, induces or procures its commission, is punishable as a principal.”);
see also United States v. Fuller,
The evidence fairly demonstrates that Claudio-Garcia was in hiding with his uncle, Garcia-Carrasquillo, and traveled with him in a stolen ear to the house where Garcia-Carrasquillo kept a large quantity of individually packaged drugs; that he remained in the apartment with his uncle and the drugs for a couple of hours before the SWAT team arrived;
13
and that he then attempted to flee from the police, exchanging gunfire with them when they pursued. From this evidence, a rational juror could reasonably infer that Claudio-Garcia accompanied his uncle to the house filled with drugs because Garcia-Carras-quillo trusted his nephew enough to enlist his help in committing the crime charged.
Cf. United States v. Rincón,
Claudio-Garcia correctly points out that there is another, more plausible explanation for his presence at the scene and his attempt to flee: He was an armed fugitive in hiding with a wanted family member, and he ran in order to avoid capture by the police. While this could be true, the government need not exclude every possible explanation.
See United States v. Ortiz,
III. González-Rivera’s Sentence
González-Rivera makes three claims of error with respect to his sentence: (1) that the district court failed to adequately explain the reasons for choosing the sentence imposed; (2) that the district court violated his Fourteenth Amendment right to equal protection when it applied the disparate equivalency ratio between crack and powder cocaine;
14
and (3) that the sentence violates his Fifth Amendment right to due process and the Eighth Amendment prohibition on cruel and unusual punishment because it is based on the crack to powder cocaine disparity. We review these legal challenges
de novo. United States v. Rivera,
A. Explanation for Sentence Imposed
In
United States v. Jiménez-Beltre,
Although at times we have been willing to go to great lengths to infer the district court’s reasoning from the record, “there are limits.”
United States v. Gilman,
Furthermore, we are unable to discern the court’s reasoning by looking to the record of the parties’ arguments. The government argued for a sentence at the top of the guidelines range considering two *133 enhancements, whereas the defendant requested a sentence at the bottom of the range without the enhancements, citing mitigating factors. The district judge did not explain whether she applied one or both recommended enhancements, what the applicable guidelines range was, whether she thought the defendant deserved a sentence at any point within a particular range, or whether she was influenced by either sides’ arguments enough to depart from one of the two ranges under consideration.
Consequently, this case differs from other cases in which we were able to understand with a modicum of certitude the reasons behind the district court’s choice of sentence by reviewing the sentencing record.
See, e.g., United States v. Vázquez-Rivera,
The government argues that it is obvious that the district court chose not to apply the two recommended enhancements and that it then adopted the government’s arguments for a sentence at the top of the resultant guidelines range. While this is certainly a plausible reading of the record, even if it were true, the district court’s explanation would be insufficient as a matter of law. Section 3553(c)(1) requires that the trial judge identify its reason for selecting a sentence at a particular point within a range exceeding twenty-four months.
See Gilman,
Because the court did not even approximate our Jiménez-Beltre approach nor provide any reasoned explanation for its determination, we will not infer several degrees of reasoning, including a specific explanation explicitly required by law, and guess what the district court was thinking. *134 Therefore, on this ground, 15 we vacate González-Rivera’s sentence and remand for resentencing consistent with this opinion and prior precedent. Id. at 446-47 (“[I]f we are in fact unable to discern from the record the reasoning behind the district court’s sentence, appellate review is frustrated and ‘it is incumbent upon us to vacate ... ’ the decision below to provide the district court an opportunity to explain its reasoning at resentencing.”).
B. Crack and Powder Cocaine Equivalency Ratios
The remainder of González-Riv-era’s arguments, none of which he raised below, involve the 100:1 equivalency ratio of crack to powder cocaine used to calculate his sentence.
See United States v. Pho,
González-Rivera also challenges the equivalency ratio as so disproportional as to be unconstitutional under the Eighth Amendment. The First Circuit has not squarely decided this issue, but every other circuit has rejected the argument that the sentencing disparity between crack and powder cocaine constitutes cruel and unusual punishment.
See United States v. Brooks,
Although this is enough to defeat González-Rivera’s argument under a
*135
plain error standard, we also point out that a defendant seeking proportionality review under the Eighth Amendment must “demonstrate, at the threshold, an ‘initial inference of gross disproportionality’ between the ‘gravity of [the] criminal conduct and the severity of the ... penalty’ imposed.”
United States v. Cardoza,
IV. Conclusion
For the foregoing reasons, we affirm García-Carrasquillo’s and Claudio-Garcia’s convictions, and we vacate González-Riv-era’s sentence and remand for resentenc-ing.
Affirmed in part, vacated and remanded in part.
Notes
. Claudio-Garcia had been serving a sentence at Camp Santana, a Puerto Rico institution for minors, when he left on a three-day pass and never returned.
. It is not clear where this staircase led.
. The agents had previously followed Garcia-Carrasquillo's girlfriend to the same residence, where she had left with an unknown individual in the same Mazda Protegé, which the agents then determined had been stolen from an auto dealer.
.Agent González-Rodríguez testified that he could not see the apartment door at any time, while Agent Valentin testified that at some *127 point during the surveillance he observed both men entering and exiting through the apartment door.
.Agent González-Rodríguez testified at one point that Cruz-González was "just lying” in the road in front of the house.
. According to Agent González-Rodríguez, the "big hole” was approximately ten feet long by ten feet wide and eight feet deep, and was possibly part of a septic tank under construction.
. Cruz-González was also charged in the same indictment, but the district court granted his motion to sever prior to trial.
. Garcia-Carrasquillo and Claudio-Garcia were each sentenced to 262 months imprisonment on Count One, 240 months on Count Two, and 120 months on Counts Five and Seven respectively, to be served concurrently. In addition, Garcia-Carrasquillo was sentenced to another 120 months on Count Three, to be served consecutively to the other terms.
.
United States v. Booker,
extending
Blakely
to the federal sentencing guidelines, had not yet been decided.
See
. The district court also imposed various conditions, not relevant here, as well as a special monetary assessment of $200 as required by law.
. At trial, Garcia-Carrasquillo's attorney objected to the admission of Agent Valentin’s testimony regarding Garcia-Carrasquillo’s alleged admission, on the ground that the testimony required "independent corroboration,” but the district court judge overruled the objection. Garcia-Carrasquillo does not appeal the admission of the evidence.
. Garcia-Carrasquillo does not challenge the sufficiency of the evidence as to other elements of the crime, particularly the specific intent to distribute the drugs. Nonetheless, we find that the large amount and individual packaging of the drugs otherwise supports a conviction under 21 U.S.C. § 841(a)(1).
See United States v. Latham,
. Claudio-Garcia asserts that there was no evidence that he was in the apartment because the agents could not see the door to the apartment from their vantage point. Even if that were so, the jury could infer that the defendants were in the apartment based on the undisputed testimony that the defendants were seen entering and leaving the carport where the door to the apartment was located.
. We assume that he meant this as a Fifth Amendment challenge, since the Fourteenth Amendment applies only to the states.
See Bolling v. Sharpe,
. To be clear, we reject any defense argument that we cannot uphold a reasonable sentence if the district court does not make an explicit statement of its reasons on the record. Our precedent is exceedingly clear that we can look to the record to clarify the judge’s reasoning. That said, district court judges would do well to make the sentencing process as transparent as possible, to avoid the possibility of remand on appeal.
See Jiménez-Beltre,
