US Air Force (USAF) STAFF Sergeant (SSGT) Jacob Thompson, 305th Civil Engineer Squadron (CES), McGuire Air Force Base (AFB), New Jersey (NJ), with a 5.56 mm M16A2 rifle, assumes a defensive position near a C-17A Globemaster III during NUCLEAR SURETY SUPPORT Exercise (M999). The exercise responds to a scenario where a disgruntled aircrew crewmember seizes control of an aircraft and a nuclear weapon, threatening to shoot the crew and explode the weapon. A High-Mobility Multipurpose Wheeled Vehicle (HMMWV) with a weapon turret blocks the C-17A