Defendant Carlos Roman-Zarate appeals his sixty-month sentence imposed following a plea of guilty to unlawful possession with intent to distribute cocaine, in violation of 21 U.S.C. § 841(a)(1). Mr. Zarate challenges the district court’s sentencing calculation, arguing the court improperly considered a post-arrest admission in determining his base offense level and erroneously applied the mandatory minimum sentence. We affirm.
*780 In October 1995, Drug Enforcement Administration (DEA) agents in Oklahoma City initiated a drug delivery between Mr. Zarate and a federal informant. When Mr. Zarate arrived at the designated meeting place, he was arrested and nine ounces of cocaine was seized from his vehicle. The three agents overseeing the operation separated following Mr. Zarate’s arrest. Two transported Mr. Zarate to DEA headquarters while the third, Agent Michael Baldos, went to the United States Attorney’s office.
Upon his arrival at DEA headquarters, Mr. Zarate was escorted to a conference room and advised of his rights under
Miranda v. Arizona,
Mr. Zarate revealed details of prior drug transactions including his involvement in the purchase and distribution of three kilograms of cocaine during the previous three months and the name of a source in Texas. After Mr. Zarate offered to participate in an undercover buy, the agents transported him to the United States Attorney’s office to discuss further cooperation. He confirmed his earlier statements but refused to provide the government with the names of his courier or local contacts. Concluding Mr. Zarate was not cooperating, Agent Bakios and the Assistant United States Attorney terminated the interview.
Mr. Zarate entered a plea of guilty to possession with intent to distribute the nine ounces of cocaine seized at the time of his arrest. Based on Mr. Zarate’s prior disclosure that he had distributed three kilograms of cocaine, the district court increased his base offense level five points. 1 The district court declined to depart from the mandatory minimum sentence as allowed by 18 U.S.C. § 3553(f), concluding Mr. Zarate had not fully cooperated with the government.
I.
Mr. Zarate contends the district court was prohibited from using his admission concerning the three kilograms of cocaine in determining the applicable sentence range because (1) the statements were made in the course of plea discussions pursuant to Fed. R.Crim.P. 11(e)(6), (2) the statements were made with the understanding they would not be used against Mr. Zarate pursuant to U.S.S.G. § 1B1.8, and (3) the statements were obtained in violation of Mr. Zarate’s Fifth Amendment right to counsel and were involuntary.
First, Mr. Zarate argues his conversation with DEA agents, in which he disclosed information in exchange for possible leniency, constituted plea discussions within the meaning of Rule 11(e)(6). Fed.R.Crim.P. 11(e)(6) provides:
Inadmissibility of Pleas, Plea Discussions, and Related Statements. Except as otherwise provided in this paragraph, evidence of the following is not, in any civil or criminal proceeding, admissible against the defendant who made the plea or was a participant in the plea discussions:
*781 (D) any statement made in the course of plea discussions with an attorney for the government which do not result in a plea of guilty or which result in a plea of guilty later withdrawn.
Interpretation of the Federal Rules of Criminal Procedure is a legal issue subject to de novo review.
United States v. Maher,
Next, Mr. Zarate maintains the DEA agents’ promise that cooperation would be helpful to him amounts to an agreement under U.S.S.G. § 1B1.8 that his statements would not be used against him. We review de novo the interpretation of the sentencing guidelines.
United States v. Pinedo-Montoya,
Section 1B1.8 of the Guidelines provides:
(a) Where a defendant agrees to cooperate with the government by providing information concerning unlawful activities of others, and as part of that cooperation agreement the government agrees that self-incriminating information provided pursuant to the agreement will not be used against the defendant, then such information shall not be used in determining the applicable guideline range, except to the extent provided in the agreement.
We are unpersuaded that § 1B1.8 constrained the government’s use of Mr. Za-rate’s statements.
Section 1B1.8 applies only where two separate agreements have been negotiated: (1) the defendant agrees to cooperate with the government by providing the requisite information, and (2) the government agrees not to use that information against the defendant.
United States v. Evans,
Similar facts were presented in
United States v. Rutledge,
Mr. Zarate’s attempt to use § 1B1.8 as a shield fails for the same reasons. The DEA agents may have promised that Mr. Zarate’s cooperation would be helpful to him, but they did not promise that incriminating statements he made in the course of cooperation would not be used against him. Furthermore, just after urging him to cooperate and just prior to being provided with the incriminating information, agents readvised Mr. Zarate of his Miranda rights. Mr. Zarate had fair and timely warning that agents planned to use his statements against him.
Finally, Mr. Zarate challenges the district court’s use of his statements under the Fifth Amendment on two grounds: first, that he did not knowingly and voluntarily waive his Miranda rights, and second, that his statements were made involuntarily. There is no question that Mr. Zarate was advised of his Miranda rights, understood those rights, and invoked them by requesting the assistance of an attorney. Mr. Zarate argues, however, his waiver was ineffective because agents subjected him to further interrogation after he requested the assistance of counsel.
*782
If a defendant talks to officers after invoking his right to counsel, the government bears the burden of proving by a preponderance of the evidence the waiver of the right was voluntary.
United States v. Toro-Pelaez,
The Supreme Court mandates that once a defendant has invoked his right to an attorney, all questioning by law enforcement officers must cease until an attorney is present.
Miranda,
The term “interrogation” refers to “words or actions on the part of the police (other than those normally attendant to arrest and custody) that the police should know are reasonably likely to elicit an incriminating response from the suspect.”
Rhode Island v. Innis,
Having determined Mr. Zarate was not subject to interrogation in violation of
Miranda,
we further conclude no evidence suggests his waiver was otherwise ineffective. Mr.
Zarate has not
alleged, and nothing in the record indicates, that agents coerced or intimidated him into waiving his rights. After evaluating the information received from Agent Baldos, Mr. Zarate told the agents he wished to speak to them without an attorney. That Agent Baldos noted the possible benefits of cooperation does not compel a finding that Mr. Zarate was deceived or lacked awareness of the consequences of his waiver. See
Toro-Pelaez,
Mr. Zarate’s exclusive reliance on
United States v. Walton,
Although we conclude Mr. Zarate’s
Miranda
rights were not violated, our Fifth Amendment inquiry is not over because Mr. Zarate also claims his statements were made involuntarily. Mr. Zarate contends his ability to make a rational choice to disclose incriminating information was destroyed by the agents’ intimations that any cooperation would benefit him. A determination of voluntariness is based on the totality of the circumstances,
United States v. Glover,
Based upon four key factors, we conclude Mr. Zarate’s statements were voluntarily given. First, Mr. Zarate was advised of his
Miranda
rights and apparently understood those rights well enough to make an initial decision to assert them.
See Glover,
Second, Mr. Zarate was not subject to prolonged detention or interrogation. Even under Mr. Zarate’s version of events, the invocation of his rights terminated police questioning, at least for the half hour before Agent Baldos arrived at DEA headquarters — and then, only ten or fifteen minutes transpired before Mr. Zarate made incriminating statements.
See Glover,
Third, there is no evidence suggesting Mr. Zarate was unusually susceptible to coercion because of age, lack of education, or intelligence. Mr. Zarate is a business owner who participates in complex transactions involving the operation of his restaurants. He clearly had no difficulty understanding his conversation with the agents.
Fourth, Mr. Zarate’s decision to cooperate in exchange for possible leniency seems, under the circumstances, to have been the result of calculation not coercion. Agent Baldos testified Mr. Zarate’s willingness to cooperate was prompted by an interest in avoiding jail and continuing his business operations. That a defendant balanced personal considerations with the possible cost of disclosure does not render his subsequent statements involuntary.
See Glover,
Mr. Zarate’s assertion that Agent Bakios’s representations of leniency transformed his statements into involuntary utterances is simply unpersuasive. Three agents testified the only agreement reached was to make the extent of Mr. Zarate’s cooperation known to the United States Attorney. We rejected defendant’s identical argument in
United States v. Lewis,
II.
Mr. Zarate also challenges the district court’s imposition of the mandatory minimum sentence for his offense, arguing his cooperation with the government earned him a downward departure from the sentencing guidelines.
Title 18 U.S.C. § 3553(f) requires the district court to sentence a defendant according to the sentencing guidelines, rather than imposing the statutory mandatory minimum sentence, when the following conditions have been satisfied:
(1) the defendant does not have more than 1 criminal history point, as determined under the sentencing guidelines;
(2) the defendant did not use violence or credible threats of violence or possess a firearm or other dangerous weapon (or induce another participant to do so) in connection with the offense;
(3) the offense did not result in death or serious bodily injury to any person;
(4) the defendant was not an organizer, leader, manager, or supervisor of others in the offense, as determined under the sentencing guidelines and was not engaged in a continuing criminal enterprise, as defined in section 408 of the Controlled Substances Act; and
(5) not later than the time of the sentencing hearing, the defendant has truthfully provided to the Government all information and evidence the defendant has eon-cerning the offense or offenses that were part of the same course of conduct or of a common scheme or plan, but the fact that the defendant has no relevant or useful other information to provide or that the Government is already aware of the information shall not preclude a determination by the court that the defendant has complied with this requirement.
18 U.S.C. § 3553(f).
3
See also United States v. Acosta-Olivas,
At sentencing, the district court found that in refusing to provide the government with all of the details of his drug transactions, Mr. Zarate had failed to comply with the fifth requirement of § 3553(f). Consequently, the court declined to depart from the guideline range. The district court’s specific conclusion the defendant is or is not eligible for relief under § 3553(f) is reviewed for clear error.
Acosta-Olivas,
Section 3553(f) requires disclosure of “everything [defendant] knows about his own actions and those of his co-conspirators.”
Acosta-Olivas,
Here, three agents testified at the sentencing hearing that Mr. Zarate had failed to fully disclose particular details of his drug operation including the name of his courier and of his contact in Oklahoma City. *785 The agents stated that based on their experience they believed Mr. Zarate had lied or been purposefully evasive in response to certain inquiries. Mr. Zarate defends his limited cooperation on the ground that complete disclosure would have endangered his life, arguing a statute requiring that level of sacrifice contravenes public policy. He cites no authority for this proposition, and we have found none in the case law of this or any other circuit. Indeed, acceptance of Mr. Za-rate’s argument would seem to contravene the purpose of the statute, not public policy. If Mr. Zarate chooses not to divulge names of his drug couriers or contacts because he suspects his colleagues-in-crime may be less than supportive of his decision, he is entitled to remain silent; but, he is no longer entitled to special treatment from the district court. We conclude the district court’s determination that Mr. Zarate was ineligible for a sentence reduction under § 3553 is not clearly erroneous.
For the reasons set forth above, we AFFIRM the district court’s judgment.
Notes
. Under the United States Sentencing Guidelines, the primary determinant of the base offense level for drug-related offenses is the quantity of drugs involved in the offense. U.S.S.G. § 2D1.1(a)(3). In determining the quantity of drags for computing the base offense level, guidelines §§ lB1.3(a)(2) and 3D1.2(d) require consideration of "all such acts and omissions that were part of the same course of conduct or common scheme or plan as the offense of conviction.”
. Because we conclude no violation of Mr. Za-rate’s Fifth Amendment rights occurred, we need not reach the question whether illegally-obtained statements would be admissible at his sentencing hearing under
United States v. Jessup,
. The language of § 3553(f) has been adopted verbatim in the United States Sentencing Commission Guidelines Manual at § 5C1.2.
