Staff Sgt. Nicolas Holt, a Maintainer with the 914th Maintenance Group, works on the wing of a KC-135 Stratotanker during its periodic inspection (PE) on Niagara Falls Air Reserve Station, New York, April 12, 2023. A PE is performed every 15 and 30 months on an aircraft to ensure every part, system and function is repaired and working properly so Airmen may safely fly it during future missions. (U.S. Air Force photo by Airman 1st Class Kylar Vermeulen)