Mаnjarrez appeals his conviction for conspiracy and possession with intent to distribute marijuana, arguing that he did not knowingly and intelligently waive his right to testify on his own behalf, and that certain jury instructions and an argument made by the prosecutor during closing argument prejudiced his case and deprived him of a fair trial. We affirm.
BACKGROUND
On October 18, 1996, Jose Suarez asked Gustavo Marquez to pick up a 196-pound shipment of marijuana for Efren Terrazas. The shipment was en route from Laredo, Texas to the Yellow Freight warehouse in Chicago Ridge, Illinois. Marquez agreed to pick up the marijuana. The next day, Manjarrez rented a Ryder truck that Marquez drove to the Yellow Freight warehouse; Manjarrez and two passengers, Terrazas and a man named Joe, followed Marquez to the warehouse in Manjarrez’s car, a blue Chevrolet Caprice.
*620 When he arrived at the warehouse, Marquez discovered that the marijuana shipment had not yet arrived. (Unbeknownst to him, it had been intercepted by federal agents in Texas and was in the process of being sent from Texas to United States Customs personnel in Chicago.) Marquez left the warehouse and drove the truck to the Ryder rental facility, where he was met by Terrazas and Manjarrez. Manjar-rez returned the truck.
On October 21, 1996, Suarez сalled Marquez and told him that the shipment had arrived at Yellow Freight. Marquez, Ter-razas, and Joe then returned to the same Ryder rental facility and waited for Man-jarrez, who eventually arrived and rented another truck. In the parking lot, Manjar-rez handed Terrazas the keys to the truck, together with money to pay for the shipping costs. Terrazas handed these items to Marquez. While all four men were standing in the parking lot, Terrazas explained to Marquez that “they” (i.e., Terra-zas, Manjarrez, and <Joe) would be in the defendant’s car watching to make sure that the truck was not being followed. Manjarrez was at Terrazas’ side when he made this statеment.
That afternoon, Marquez drove the truck to the warehouse. Customs agents had established surveillance at the warehouse, and they observed Marquez arrive and drive off with the marijuana-filled crate in the Ryder truck. From there, Marquez drove toward the planned delivery site at 147th and Loomis in Chicago, with Customs agents on his tail. Following Terrazas’ instructions, Marquez took a long and circuitous route to the delivery site. Early on in the journey, the pursuing agents noticed Manjarrez’s blue Caprice following the truck at every turn and performing counter-surveillance maneuvers — that is, maneuvers designed to detect the presence of pursuing law enforcement officers. After some 90 minutes of driving, the truck and Manjarrez’s car approached the 147th Street exit off of Interstate 57 in Chicago. However, sensing that they were being followed by law enforcement officers, Manjarrez and his passengers decided to separate from the truck, and Manjarrez drove in the opposite direction on 147th Street.
Marquez eventually drove the truck to his own neighborhood in Chicago. Fearing apprehension, Terrazas abandoned the drug deal. However, the next day, Suarez, Marquez, and another man, Luis Moreno, devised an alternate plan to deliver the marijuana. As рart of this plan, Marquez and Moreno transported the marijuana to Moreno’s garage, where they were arrested shortly thereafter.
Manjarrez was interviewed by Customs agents on January 28, 1997. He admitted renting a Ryder truck on October 21, 1996, but denied renting one on any other occasion. With respect to the October 21st rental, Manjarrez claimed that he rented the truck for a friend named Jose Rodriguez who needed the truck to move from his home, that he provided Rodriguez the keys to the truck and returned home immediately, and after later attempting to determine whether Rodriguez had returned the truck, he eventually reported thе truck missing to the Chicago Police Department.
In August of 1998, Manjarrez was indicted and charged with conspiracy to possess with intent to distribute marijuana in violation of 21 U.S.C. §§ 846 and 841(a)(1) (Count One), and with possession of marijuana with intent to distribute in violation of 21 U.S.C. § 841(a)(1) and 18 U.S.C. § 2. (Count Two). He remained a fugitive until he was arrested by Customs agents at O’Hare airport in Chicago on February 17, 2000. After waiving his Miranda rights, Manjarrez spoke with the agents, again *621 admitting that he had rented a Ryder truck on October 21, 1996. He again claimed that he had rented the truck for Jose Rodriguez, and he gave an account that was consistent with the story that he gave during his first interview, with one notable exception; this time, Manjarrez said that he was told by a membеr of the Ryder rental facility that the truck had been used to transport drugs. However, Manjarrez denied knowing Terrazas, Marquez, or Suarez, and persisted in his denial even after being shown pictures of all three men.
At trial, several witnesses testified for the government, including the Customs agent who discovered the marijuana-filled crate in Texas, two Chicago Customs agents who oversaw the investigation at different times (both of whom interviewed Manjarrez and one of whom participated in the October 21, 1996 surveillance), a narcotics expert with the Drug Enforcement Administration, and Marquez. 1 The jury heard evidence of the conflicting statements that Manjarrez gave to law enforcement agents regarding his rental of Ryder trucks. The defense presented no evidence.
During the jury deliberations, the jury sent the district court notes requesting clarification on two separate occasions. In the first note, the jury asked the court whether they could return a not-guilty verdict on the possession charge even if they returned a guilty verdict on the conspiracy charge. After conferring with and receiving the blessing of counsel for both sides, the court instructed the jury to read the jury instructions and to keep deliberating. In the second note, the jury asked the court to provide guidance regarding thе definition of reasonable doubt. After again conferring with both attorneys, the court informed the jury that it could not provide further guidance on the definition and asked them to continue their deliberations.
On May 10, 2000, the jury convicted Manjarrez on both counts. On September 20, 2000, the district court sentenced Man-jarrez to 51 months in prison followed by three years of supervised release. Man-jarrez appeals his conviction.
DISCUSSION
Manjarrez advances three grounds for the reversal of his conviction. He claims (1) that he did not knowingly and intelligently waive his right to testify in his own behalf, (2) that the district court erred in giving an “ostrich” jury instruction without also expressly instructing the jury that subjective good faith on Manjarrez’s part was a defense to the charges, and (3) that the prosecutor made an improper and prejudicial remark during closing argument. Manjarrez argues that these errors (together or singly) deprived him of a fair trial, and quite likely prejudiced the outcome of the trial given what he characterizes as the “thinness” of the government’s case and the confusion expressed by the jury during their deliberations. We address Manjarrez’s arguments in turn.
A. Manjarrez’s waiver of his right to testify
Manjarrez contends that the record establishes that he did not knowingly and intelligently waive his right to testify on his own behalf. Near the close of the government’s case-in-chief, the district court asked Manjarrez’s counsel whether he intended to rest immediately after the *622 close of the government’s case (without putting on any evidence). He responded in the affirmative. The court then asked Manjarrez’s counsel if he would like the court “to talk to Mr. Manjarrez right now about not testifying.” Manjarrez’s counsel responded that he would, and the court engaged in the following colloquy with Manjarrez:
COURT: Mr. Manjarrez, the Court understands that it’s your decision in this case not to testify in your own defense. As you’ve heard me tell the jury several times, you have an absolute right not to testify, and I would be happy to continue to instruct the jury as I have already that they cannot draw any inference or suggestion of guilt from the fact that you did not testify.
On the other hand, you should know that you have an absolute right to testify in your own defense. Do you understand?
MANJARREZ: (Through Interpreter) 2 Yes.
COURT: You understand that you can testify in your own defense if you decide you want to.
MANJARREZ: (Through Interpreter) Well, yes.
COURT: Okáy. I also want you to know that being realistic about this, even though sometimes I instruct the jury not to draw any inference or suggestion of guilt from the fact that you didn’t testify, it could be that some jurors are going to draw that type of inference. Do you understand that?
MANJARREZ: (Through Interpreter) Yes, that’s fine.
COURT: Knowing all of this, is it your desire not to testify in this case?
MANJARREZ: (Through Interpreter) No. I mean my lawyer’s here to answer everything that needs to be answered.
COURT: Okay. Has anyone forced you in any way or threatened you in order to get you not to testify?
MANJARREZ: (Through Interpreter) No.
COURT: Okay. And let me just tell you, Mr. Manjarrez, you’re free to continue to talk to Mr. Halprin [defense counsel], and if you decide at any point that you want to testify, that’s strictly up to you. Do you understand that?
MANJARREZ: (Through Interpreter) That’s fine.
COURT: Okay. I’ll leave it at that.
Trans, at 223-24.
Manjarrez asserts that nowhere in the above dialogue is there evidence that he knowingly and intelligently waived his right to testify. While the court did ask a series of basic questions regarding Man-jarrez’s intentions not to testify and elicited a series of “yes” responses from him through the interpreter, Manjarrez contends that this was insufficient sincе the court “did nothing to satisfy itself that [Manjarrez], who did not speak or understand fluent English, understood the substance of what it means to testify.” In addition, he notes that at no time during the colloquy did his counsel state on the record that he had explained to him what it means to testify. Finally, Manjarrez seizes on his response to the court’s fourth question, wherein he stated that his lawyer was “here to answer everything that needs to be answered,” and argues that it demonstrates a “total lack of understanding of what it means to testify,” since it seems to *623 imply that he thought that his lawyer could testify and offer evidence on his behalf as a witness. According to Manjar-rez, all of this indicatеs that he waived his fundamental constitutional right to take the stand without adequately comprehending either the nature of his right or the consequences of waiving it. Manjarrez maintains that this deprived him of a fair trial and, in light of what he considers to be the weakness of the government’s case as well as the jury’s confusion during their deliberations, that it probably affected the outcome of the trial. On these grounds Manjarrez urges us to reverse his conviction or to remand for an evidentiary hearing on the issue of whether his waiver of his right to testify was knowing and intelligent. We reject both Manjarrez’s arguments and his request.
A criminal defendant has a constitutional right to testify on his own behalf.
See Rock v. Arkansas,
There is nothing in the record which required the district court to do anything more than it did to insure that Manjarrez’s waiver of his right to testify was knowing and intelligent. Manjarrez does not claim that he expressed a desire to testify which his counsel refused to hon- or.
See Campione,
Nevertheless, Manjarrez claims that his response to the fourth question in the colloquy shows that he was laboring undеr a fundamental misapprehension regarding what it means to testify, and that once the trial court was put on notice of this it was obligated to take further steps to insure that he fully and correctly understood the right that he was waiving. We are not persuaded. After informing Manjarrez of his absolute right to testify and of the possibility that jurors might draw an adverse inference from his failure to testify, the court asked Manjarrez, “knowing all this, is it your desire not to testify in this case?” Manjarrez responded, “No. I mean my lawyer’s here to answer everything that needs to be answered.” He never expressed confusion regarding the meaning of his right to testify nor asked the cоurt for clarification, despite having been asked several times whether he understood. Moreover, his response does not clearly demonstrate a lack of understanding regarding the meaning or significance *625 of his right to testify. Manjarrez said merely that his lawyer would “answer everything that needs to be answered.” He did not say that his lawyer would “testify” on his behalf. Given this, his response can reasonably be taken to mean that Manjar-rez thought that his lawyer would do everything that needed to be done by way of presenting a defense (i.e., that his lawyer would make any arguments on Manjarrez’s behalf that needed to be made, without the aid of Manjarrez’s testimony), and not that hе thought that his lawyer would testify for him.
Thus, we do not hesitate to hold Manjar-rez bound by his waiver. While there may be cases wherein a defendant’s conduct clearly indicates a fundamental lack of understanding regarding the meaning of the right to testify and/or the consequences of waiving it, this is not such a case. We will not vacate Manjarrez’s conviction or require further proceedings on the basis of an unsubstantiated,
post hoc
claim that he did not understand his right to testify when he waived it,
cf. Underwood,
B. Ostrich instruction
Manjarrez claims that the district court erred in giving this court’s pattern “ostrich” jury instruction without also expressly instructing the jury that it may consider evidence of Manjarrez’s subjective good faith as a defense. The court gave the following instruction, based on Fed.CRIm. Jury Instructions of the Seventh CirCuit § 4.06 (1998), over Manjar-rez’s objection:
When the word “knowingly” is used in these instructions, it means that the defendant realized what he was doing and was aware of the nature of his conduct and did not act through ignorance, mistake, or accident. Knowledge may be proved by the defendant’s conduct and by all the facts and circumstances surrounding the case.
You may infer knowledge from a combination of suspicion and indifference to the truth. If you find that a person had a strong suspicion that things were not what they seemed or that someone had withheld sоme important facts, yet shut his eyes for fear of what he would learn, you may conclude that he acted knowingly as I have used that word. You may not conclude that the defendant had knowledge if he was merely negligent in not discovering the truth.
We have approved the giving of this instruction “in cases in which there is evidence that the defendant, knowingly or strongly suspecting that he is involved in shady dealings, takes steps to make sure that he does not acquire full or exact knowledge of the nature and extent of those dealings.”
United States v. Wallace,
Manjarrez’s arguments are unavailing. First, his counsel never tendered a “good faith” instruction to the district court. As we hаve noted, “we require a formal submission of a proposed charge, otherwise we will consider alleged defects in the court’s instructions only under the plain error doctrine.”
See United States v. Holland,
The gist of the offense of conspiracy is the agreement among the conspirators to commit an offense. Those without knowledge of the conspiracy are not conspirators. One who, without more, furnishes supplies or services to one engaged in a criminal activity is not guilty of conspiracy even though his sale of goods or services may have furthered the object of a conspiracy so long as the *627 seller of the goods or services has no knowledge of the conspiracy.
Moreover, while the court declined to issue various instructions proposed by the defense (each of which presented a variation of the “mere presence” defense to the charge of conspiracy), the court ultimately gave this Circuit’s pattern “mere presence” instruction, which reads:
A defendant’s presence at the scene of a crime аnd knowledge that a crime is being committed is not alone sufficient to establish the defendant’s guilt. A defendant’s association with conspirators is not by itself sufficient to prove his participation or membership in a conspiracy.
See Fed.CRIM. Jury INSTRUCTIONS of the Seventh Circuit § 5.11(a) (1999).
Finally, the district court provided the jury with careful and accurate definitions of the crimes charged, informing the jurors that they could not find Manjarrez guilty of either charge unless they found that the government proved his guilt beyond a reasonable doubt as to each element of each offense, including Manjar-rez’s knowledge or intent with respect to the charged offenses. Spеcifically, the court instructed the jury that:
In order to establish the offense of conspiracy as charged in Count 1, the government must prove:
First, that the conspiracy charged in count 1 existed; And, second, that the defendant knowingly became a member of the conspiracy with an intention to further the conspiracy.... If ... you find from your consideration of all the evidence that any of these propositions has not been proved beyond a reasonable doubt, than you should find the defendant not guilty....
To be a member of the conspiracy, ... the government must prove beyond a reasonable doubt that the defendant was aware of the common purpose and was a willing participant....
Trans, at 317-19.
In order to establish the offense of possession with intent to distribute marijuana as charged in count 2, the government must prove the following propositions: First, that the defendant knowingly or intentionally possessed marijuana. Second, that the defendant possessed marijuana with the intent to deliver it to another person. It does not matter whether the defendant knew the substance was marijuana. It is sufficient that the defendant knew that it was some kind of prohibited drug.
... If ... you find from your consideration of all the evidence that any of these propositions has not been proved beyond a reasonable doubt, then you should find the defendant not guilty.
Trans, at 320-21.
Taken together, these careful and straightforward explanations of the degree of knowledge and intent that the government must prove to convict Manjarrez on each charge, coupled with the repeated admonitions not to convict unless such a degree of guilty intent is established beyond a reasonable doubt, make it highly unlikely that the jury found Manjarrez guilty of either charge without also finding beyond a reasonable doubt that he had the required mental state.
See Koster,
C. Prosecutor’s remarks during closing argument
Manjarrez’s final claim of error can be dismissed with dispatch. Manjarrez argues that the government improperly suggested to the jury that a defendant could be found guilty of conspiracy under an aiding-and-abetting theory of liability. He notes, correctly, that the district court had earlier rejected the government’s proposed instruction which specifically addressed aiding-and-abetting liability in the context of a conspiracy charge, and instead subsequently issued an aiding and abetting instruction which was not expressly tied to either the conspiracy charge (Count One) or to the substantive offense (Count Two). Manjarrez maintains that given the weakness of the government’s case and the subsequent juror confusion, the Assistant United States Attorney (AUSA)’s “improper argument” was prejudicial and likely induced the jury to convict in derogation of the trial court’s instructions and in violation of Manjarrez’s due process right to a fair trial. 5
We disagree. As we recently noted,
[i]n reviewing allegations of improper comments by a prosecutor, we employ a *629 two-step process. We first look at the comments in isolation to determine if they were improper.... If we find the comments are proper, the analysis ends. If we find they are improper, we must then examine the comments in light of the record as a whole to determine whether the comments deprived the defendant of a fair trial.
United States v. Castillo,
I believe Judge Castillo is going to instruct you ... that [the defendant is] guilty if he’s aiding and abetting someone else’s possession of the marijuana. That is, Mr. Manjarrez is renting the truck or driving the counter-surveillance, or both, so that he could help someone else possess this marijuana and move it ... and he does that knowingly, then he is guilty of that charge, (emphasis supplied).
The plain language of the statement refers exclusively to the possession charge, and the AUSA made the statement while discussing the facts and evidence pertinent to that charge, after he had finished discussing the conspiracy charge. The district court ultimately gave a generic aiding-and-abetting instruction, and Manjarrez does not argue (nor can he) that the jury could not find him guilty of the possession charge if they determined that he aided and abetted the commission of that offense. Therefore, the AUSA’s comment was entirely cоnsistent both with the instructions given by the district court and with the law. Hence, we find that the remark was perfectly proper. It caused Manjarrez no prejudice, and it certainly did not deprive him of a fair trial.
CONCLUSION
We have considered Manjarrez’s other arguments, and find them meritless. For the foregoing reasons, we AffiRM Manjar-rez’s conviction.
Notes
. Marquez was separately charged with conspiring to possess with intent to distribute marijuana in connection with the same transaction. He pled guilty to the charge, and received a sentencing benefit in exchange for agreeing to testify against Manjarrez.
. Manjarrez, a native Spanish speaker, required the assistance of an interpreter at trial. Two foreign language interpreters were sworn in at the trial’s outset, and throughout the course of the trial the)' translated the words spoken at trial into Spanish, as well as the words spoken by Manjarrez into English.
.
Rock
held that the right of the accused to testify on his own behalf in a state trial arises, in part, from the due process clause of the Fourteenth Amendment.
Rock,
. In a single “throw-away” sentence and without any supporting argument or citation to pertinent authority, Manjarrez also claims that his trial counsel rendered ineffective assistance of counsel by failing to ask the district court to issue a good faith defense instruction once he learned that the court was planning to issue the ostrich instruction. As we have recently stated, "we are generally reluctant to hear ineffective assistance of counsel claims on direct appeal because most trial records, unsupplemented by a 28 U.S.C. § 2255 hearing, lack the evidence necessary to fashion a succеssful claim.”
United States
v.
Pergler,
. Manjarrez also suggests without developed argument or citation to authority that his trial counsel rendered ineffective assistance by failing to move for a mistrial in response to the AUSA’s improper comments. This argument meets the same fate as Manjarrez’s other ineffective assistance claim; it is waived.
