Airmen of the 90th Mission Support Group stand in formation on Argonne Parade Field, F.E. Warren Air Force Base, Wyo., June 11, 2015, prior to the 90th MSG change-of-command ceremony. The group is comprised of a 90th Logistics Readiness Squadron, 90th Civil Engineer Squadron, 90th Force Support Squadron, 90th Communications Squadron, and 90th Contracting Squadron, which provide essential functions to support the 90th Missile Wing mission. (U.S. Air Force photo by Lan Kim/Released)