In an action seeking review of the Merit Systems Protection Board's decision denying petitioner's request for corrective action under the Uniformed Services Employment and Reemployment Rights Act of 1994 (USERRA), 38 U.S.C.section 4301, alleging that the Department of Energy improperly revoked his security clearance and the Navy improperly terminated his employment thereafter, the Board's decision is affirmed where it lacked the authority to review adverse security clearance determinations and the Navy had not acted improperly in terminating petitioner given the revoked clearance.