Air Force Senior Airman Michael Van Deusen checks the power box of the tactical automated security system or TASS, at Bagram Airfield, Afghanistan, June 27, 2016. The TASS system detects movement on the flightline perimeter fencing and relays that information to a joint operations center. Deusen is assigned to the 455th Expeditionary Security Forces Squadron, quick reaction force. Air Force photo by Senior Airman Justyn M. Freeman