A U.S. Air Force Tactical Air Control Party (TACP) Airman assigned to the 5th Air Support Operations Squadron, Joint Base Lewis-McChord (JBLM), Wash., low crawls through sand during the 2019 Lightning Challenge at JBLM, Wash., July 29, 2019. The 2019 Lightning Challenge consisted of 20 two-man TACP teams competing to be recognized as best in the career field. (U.S. Air Force photo by Airman 1st Class Aaron Larue Guerrisky)