Marines from Combat Logistics Battalion 22, 22nd Marine Expeditionary Unit, kneed C-4 at a demolition range aboard Fort Pickett, Va., Dec. 8, 2010. The engineer section of CLB 22 practiced making improvised explosives in preparation for their deployment with the 22nd MEU. The Marines and sailors of the 22nd MEU recently began an aggressive series of progressively, more complex pre-deployment exercises designed to train and test the MEU's ability to operate as a cohesive and effective fighting force. The 22nd MEU is a multi-mission capable force of 2,200 Marines and sailors and comprised of Aviation Combat Element, Marine Tilt Rotor Squadron 263; Logistics Combat Element, Combat Logistics Battalion 22; Ground Combat Element, Battalion Landing Team, 2nd Battalion, 2nd Marine Regiment; and its command element.