Tech. Sgt. Michael Olyer, 914th Maintenance Squadron, nondestructive inspector, performs an ultrasonic inspection of rivets on the boom nozzle of a KC-135R Stratotanker, June 8, 2020 at Niagara Falls Air Reserve Station, N.Y. The tanker is undergoing a 24 month inspection. (U.S. Air Force photo by Peter Borys)