Sergeant Jason Walsh and Cpl. John James, metal workers with Marine Wing Support Squadron 172, Marine Wing Support Group 37, 3rd Marine Aircraft Wing (Forward), construct a smaller version of their bracket. The bracket afforded security forces a way to mount security equipment on top of towers around the air base. - Sergeant Jason Walsh and Cpl. John James, metal workers with Marine Wing Support Squadron 172, Marine Wing Support Group 37, 3rd Marine Aircraft Wing (Forward), construct a smaller version of their bracket. The bracket afforded security forces a way to mount security equipment on top of towers around the air base.