First Lt. Paul Lee, the 321st Missile Squadron missile combat crew commander, performs a simulated key turn of the Minuteman III weapon system during a Simulated Electronic Launch-Minuteman test inside the launch control center at a missile alert facility in the 90th Missile Wing's missile complex, Neb., April 11, 2017. During a SELM, the missileers in the LCC are responsible for sending commands to the Minuteman III ICBMs in the launch facility. (U.S. Air Force photo/Staff Sgt. Christopher Ruano)