FUNCTION CHECK U.S. Marine Corps Cpl. Shawn M. Smith performs a function check on an AV-8B Harrier aircraft on Camp Bastion in Afghanistan's Helmand province, Sept. 3, 2012. Smith, a power line mechanic, is assigned to Marine Attack Squadron 211, Marine Aircraft Group 13, 3rd Marine Aircraft Wing. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 816747-L-LJZ36-728.jpg Photo Gallery