Litto B. Bacas appeals from a grant of summary judgment in favor of defendant-appellee Frances J. Harvey, Secretary of the Army (Secretary). Bacas, who was formerly a civilian army employee, alleges that he was discriminated against because of his age, his race, his national origin, and in retaliation for equal employment opportunity (EEO) complaints. Bacas asserts that because of this discrimination, the following adverse employment actions occurred: (1) his employment was terminated; (2) he was not promoted; (3) a written reprimand was placed in his file for taking unauthorized leave; and (4) he was subjected to a hostile environment.

Bacas raises two issues on appeal. First, he contends that the district court erred in finding that the Merit Systems Protection Board’s (MSPB’s) decision to uphold Bacas’s removal was supported by substantial evidence. Second, Bacas argues that the district court inappropriately granted summary judgment on his employment discrimination claims.

Because Bacas asserted his claims through the EEO process and through the MSPB process, this is a “mixed case.” 1 Under 5 U.S.C. § 7703(c), we review Bacas’s discrimination claims raised before the MSPB de novo. 2 Our review of the MSPB’s decision to uphold Bacas’s termination is limited to the administrative record, and the MSPB’s determinations must be upheld “unless they are clearly arbitrary and capricious, unsupported by substantial evidence or otherwise not in accordance with law.” 3

The district court concluded that the decision to terminate Bacas was clearly supported by substantial evidence. We agree. Bacas filed inappropriate leave requests, filed frivolous complaints of workplace violence against his co-workers, and falsely claimed to the military police that his supervisor assaulted him. Given Bacas’s actions, the MSPB’s decision to terminate his employment was made to promote the efficiency of the service and is supported by substantial evidence. 4

Bacas argues that the district court erred in concluding that there are no genuine issues of material fact with regard to his claim that discrimination caused the selection of another candidate rather than him for a facilities manager position, his receipt of a written reprimand for unauthorized leave, and the termination of his employment. To establish a prima facie case for discrimination, Bacas must show *331 that (1) he is a member of a protected class; (2) he suffered an adverse employment decision; (3) he was qualified for the position sought or held; and (4) the position sought was filled by someone outside of the protected class or persons not in the protected class were treated more favorably. 5 The Secretary can rebut Bacas’s prima facie case by articulating a legitimate, non-discriminatory reason for the adverse action taken against Bacas. 6 Ba-cas may then rebut the Secretary’s reason by proving (1) that the reason was merely a pretext for discrimination; or (2) “that the [Secretary’s] reason, while true, is only one of the reasons for its conduct, and another motivating factor is [Bacas’s] protected characteristic.” 7

Bacas claims that the failure to promote him to a facilities manager’s position was based on unlawful discrimination. Even assuming Bacas established a prima facie case in the selection of Christopher Snodgrass — a candidate not sharing Bacas’s protected characteristics — for the facilities manager position, the Secretary has articulated legitimate, nondiscriminatory reasons for promoting Snodgrass. A selection board comprised of two officers reviewed Snodgrass’s and Bacas’s resumes, and concluded that Snodgrass was the best-qualified candidate because he had been a facilities manager in the past, had recent supervisory experience, and had recent health facility training. To prove those reasons were pretextual, as Bacas contends, he must show that he was clearly better qualified. 8 Bacas asserts that he was clearly better qualified because he had a bachelor’s and a master’s degree while Snodgrass was only a high school graduate. However, the facilities manager position did not require college education. Further, the selection board credited Bacas with superior educational credentials, but still recommended Snod-grass based upon a consideration of each candidate’s overall qualifications. Accordingly, Bacas has not countered the Secretary’s legitimate, non-discriminatory reasons for promoting Snodgrass in lieu of Bacas.

Bacas fails to establish a prima facie case with regard to his having a written reprimand placed in his employment file for being absent without leave and for the termination of his employment. He fads to show anyone who engaged in similar misconduct being treated more favorably. Moreover, the Secretary has provided a legitimate, non-discriminatory reason for reprimanding Bacas. Bacas was notified that he was considered absent without leave for September 3-6, 2002. Bacas did not submit any documentation to account for his absence during this time period. In fact, he only offers his own unsupported belief that the Secretary’s reasons for the adverse employment actions were untrue. However, we have held “that an employee’s subjective belief that he suffered an adverse employment action as a result of discrimination, without more, is not enough to survive a summary judgment motion, in the face of proof showing an adequate nondiscriminatory reason.” 9

*332 The district court also granted the Secretary summary judgment on Bacas’s hostile work environment claim. Bacas only references the facts in his brief; he does not inform us of an error. 10 Accordingly, the issue is waived.

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For these reasons, the judgment of the district court is AFFIRMED.