Maj. Erin R. Sturgell, 379th Expeditionary Medical Operations Squadron physical therapist, inserts a dry needle into the quadriceps of U.S. Army Sgt. Karl Hawthorne, Combined Air Operations Center air defense communications and tactics specialist, July 28, 2016, at Al Udeid Air Base, Qatar. Dry needling treats muscular dysfunction and is a healing technique used to relieve pain and helps muscle fibers to reset and restore their function. (U.S. Air Force photo/Technical Sgt. Carlos J. Treviño/Released)