; and (5) not later than 1 year after the date of enactment of this section, take all necessary and appropriate actions to review and implement service-related medical certifications to merchant mariner credential requirements. (d) Advancing military to mariner within the employer agencies (1) In General The Secretary of Defense, the Secretary of the Department in which the Coast Guard operates, and the Secretary of Commerce shall have direct hiring authority to employ separated members of the uniformed services with valid merchant mariner licenses or sea service experience in support of United States national maritime needs, including the Army Corps of Engineers, U.S. Customs and Border Protection, and the National Oceanic and Atmospheric Administration. (2) Appointments of retired members of the Armed Forces Except in the case of positions in the Senior Executive Service, the requirements of section 3326(b) of title 5, United States Code, shall not apply with respect to the hiring of a separated member of the uniformed services under paragraph (1). (e) Separated member of the uniformed services In this section, the term separated member of the uniformed services means an individual who— (1) is retiring or is retired as a member of the uniformed services; (2) is voluntarily separating or voluntarily separated from the uniformed services at the end of enlistment or service obligation