Corporal Scott Johnson (bottom), a special security

Corporal Scott Johnson (bottom), a special security representative and systems administrator with Regimental Combat Team 7, holds his opponent in the guard position during a submission grappling tournament here, April 7, 2013. Johnson, a 23-year-old native of Flagstaff, Ariz., is responsible for ensuring Marines who need it have access to classified information, and said he loves head-to-head competition.