Chief Warrant Officer 4 Jon Siers, the senior command

Chief Warrant Officer 4 Jon Siers, the senior command and control systems integrator for Detachment 1, 100th Missile Defense Brigade (Ground-based Midcourse Defense), delivers his remarks to a virtual audience during a farewell ceremony at the Missile Defense Agency Building at Vandenberg Air Force Base, Calif., July 8, 2020. Siers will officially retire later this year following a 35-year career in the U.S. Army. (U.S. Army photo by Staff Sgt. Zach Sheely)