Opinion of the Court
SULLIVAN, Judge:On June 15, 1987, appellant was tried by a military judge sitting alone as a general court-martial at Naval Air Station, Fallon, Nevada. Pursuant to his pleas, he was found guilty of making a false official report, willful damage to property, willful destruction of property, and larceny, in violation of Articles 107, 109, and 121, Uniform Code of Military Justice, 10 USC §§ 907, 909, and 921, respectively. He was sentenced to a bad-conduct discharge, confinement and forfeiture of $450.00 pay per month for 7 months, and reduction to the lowest enlisted grade. The convening authority approved the sentence as adjudged. The Court of Military Review affirmed the findings and sentence in an unpublished opinion dated August 30, 1988.
This Court granted review of the following issue:
WHETHER THE FINDINGS OF GUILTY TO CHARGE II AND THE SPECIFICATION THEREUNDER SHOULD BE SET ASIDE BECAUSE APPELLANT’S FIFTH AMENDMENT RIGHT TO SILENCE PROTECTED HIM FROM IDENTIFYING HIS ACCOMPLICE OR HIMSELF AS SUSPECTS IN A CRIMINAL INVESTIGATION ON A MILITARY POLICE REPORT WHICH HIS MILITARY DUTIES REQUIRED HIM TO EXECUTE.
We hold that the Fifth Amendment gave appellant no license to lie on this “Incident/Complaint Report” (United States v. Aronson, 8 USCMA 525, 25 CMR 29 (1957)) and otherwise sustain the findings of guilty based on his guilty pleas. See United States v. Harrison, 26 MJ 474 (CMA 1988).
The evidence of record establishes the following facts as summarized by appellate *73defense counsel. On November 6, 1986, appellant and Petty Officer Second Class Samuel K. Schoonover broke into the car of Airman Apprentice Jon D. Sherwood and stole a Sony AM/FM cassette car radio, a .22 caliber rifle, and two Pioneer car speakers.
At that time, appellant was assigned to the base security force at Naval Air Station, Fallon, Nevada. On November 10, 1986, while appellant was on duty as a base security officer, Airman Apprentice Sherwood reported this theft from his automobile. Appellant filled out an Incident/Complaint Report based on the information provided to him by the victim. Appellant admitted that, as Watch Commander at the time the victim filed his complaint, he was required to investigate any crime that was reported. The information appellant recorded on the Incident/Complaint Report, OPNAV Form 5527.1, was accurate except for Block 16, which required, inter alia, the entry of the names of suspects. Appellant wrote in this block that any suspect was “unknown,” despite his obvious personal knowledge that both he and Petty Officer Schoonover were the perpetrators.
At trial, the military judge accepted appellant’s guilty pleas to making a false official report (Charge II) as provident.1 He reasoned that appellant could have named Petty Officer Schoonover as a suspect and thus could have truthfully filled out the Incident/Complaint Report without incriminating himself.
A
In Bryson v. United States, 396 U.S. 64, 90 S.Ct. 355, 24 L.Ed.2d 264 (1969), the Supreme Court stated:
But after Dennis[2] it cannot be thought that as a general principle of our law a citizen has a privilege to answer fraudulently a question that the Government should not have -asked. Our legal system provides methods for challenging the Government’s right to ask questions — lying is not one of them. A citizen may decline to answer the question, or answer it honestly, but he cannot with impunity knowingly and willfully answer with a falsehood.
396 U.S. at 72, 90 S.Ct. at 360 (emphasis added; footnote omitted). We agree with the Court of Military Review that this principle is fully applicable to the case at bar. See United States v. Aronson, supra.
Here, appellant entered in Block 16 of the Incident/Complaint Report that the name of any suspect was “unknown.” He admitted at trial this statement was not true, i.e., he knew Petty Officer Schoonover was a suspect. This is not a case where a servicemember simply failed to make a statement in response to an official duty which either directly or indirectly required him to incriminate himself. See United States v. Dupree, 24 MJ 319 (CMA 1987); United States v. Reed, 24 MJ 80 (CMA 1987). In other words, appellant did not refuse to enter any information in Block 16 regarding a suspect. His admitted affirmative act of deception is the distinguishing characteristic that removes his falsehood from the realm of constitutional protection. See United States v. Knox, 396 U.S. 77, 80, 90 S.Ct. 363, 365, 24 L.Ed.2d 275 (1969); see also United States v. Wong, 431 U.S. 174, 97 S.Ct. 1823, 52 L.Ed.2d 231 (1977).
B
Despite the resolution of the granted issue, we must express our bewilderment concerning the decision of appellant to plead guilty to this offense under Article 107. We have some doubt whether applica*74ble military regulations impose a duty upon a military policeman to report his personal knowledge concerning this offense on this form. Cf. United States v. Heyward, 22 MJ 35, 36 (CMA), cert. denied, 479 U.S. 1011, 107 S.Ct. 656, 93 L.Ed.2d 710 (1986). Moreover, whether appellant or his partner could reasonably be considered a “suspect” in this crime when Airman Apprentice Sherwood reported the theft is a perplexing question.3 Nevertheless, appellant’s providence inquiry statements reflect that he considered himself under a duty to report, if not himself, then Schoonover, as a suspect on this form. Post-trial speculation regarding the scope of his regulatory duty to report now “cannot be countenanced.” United States v. Harrison, 26 MJ at 476; cf. United States v. Reed, supra at 81 n.2.
Another potential problem we perceive in this case is applicability of the “exculpatory no” doctrine to appellant’s prosecution under Article 107. See United States v. Davenport, 9 MJ 364, 369-70 (CMA 1980); cf. United States v. Gay, 24 MJ 304 (CMA 1987). Here appellant’s false statement was essentially that he knew of no suspect concerning the theft he was investigating. Arguably, this was a statement by appellant not going “beyond a mere denial.” United States v. Davenport, 9 MJ at 370. However, appellant at trial did not invoke this doctrine; he acknowledged that in his capacity as a police subordinate he tried to “mislead” his commanding officer; and finally he admitted his statement also extended to Petty Officer Schoonover’s involvement. Cf. United States v. Medina De Perez, 799 F.2d 540, 544-46 and n. 9 (9th Cir.1986). We thus have no occasion to reject his pleas on this basis.
The decision of the United States Navy-Marine Corps Court of Military Review is affirmed.
. Specification: In that Gunner’s Mate (Technician) First Class Richard A. Sievers, U.S. Navy, Naval Air Station, Fallon, Nevada, on active duty, did, at Naval Air Station, Fallon, Nevada, on or about 10 November 1986, with intent to deceive, make to Commanding Officer, Naval Air Station, Fallon, Nevada, an official report, to wit: an Incident/Complaint Report, which report was false in that the suspect who was known was stated in the said report to be unknown, and that report was then known by the said GMT1 Sievers to be so false.
. Dennis v. United States, 384 U.S. 855, 86 S.Ct. 1840, 16 L.Ed.2d 973 (1966).
. The Government suggests in its brief that a true answer to this question might be "suspect unknown to complainant."