A U.S. Air Force Tactical Air Control Party Airman assigned to the 5th Air Support Operations Squadron, Joint Base Lewis-McChord (JBLM), Wash., climbs on top of an obstacle during the 2019 Lightning Challenge at JBLM, Wash., July 29, 2019. During the challenge, TACP Airmen completed a timed obstacle course consisting of climbing and crawling obstacles as well as multiple weight carries. (U.S. Air Force photo by Airman 1st Class Aaron Larue Guerrisky)