U.S. Air Force Senior Airman Christopher Waller, right, and Airman 1st Class Mason Choice, both 60th Civil Engineer Squadron explosive ordnance disposal technicians, prepare a F6A robot for initial reconnaissance during a weapons of mass destruction training Oct. 28, 2020, at Travis Air Force Base, California. The F6A robot is used to investigate suspicious packages from a safe distance. (U.S. Air Force photo by Chustine Minoda)