Service members prepare to clear a room as their teammates look on at the Tactical Combatives Course; a class ran by the U.S. Army Combatives School, March 22, 2016. Any service member who wishes to participate in the course just needs to provide their most recent physical fitness assessment, fill out a safety questionnaire, and complete a combatives injury screening form. (U.S. Air Force photo by Senior Airman Mariah Haddenham/released)