A Marine driving a Humvee tackles a four-foot-deep water-fording area at Camp Lejeune, North Carolina Aug. 13, 2014, during exercise Heavy Metal 14. Before the Marines were allowed to cross the water in their vehicles, they had to first navigate the obstacles on foot to check for any unseen dangers. - A Marine driving a Humvee tackles a four-foot-deep water-fording area at Camp Lejeune, North Carolina Aug. 13, 2014, during exercise Heavy Metal 14. Before the Marines were allowed to cross the water in their vehicles, they had to first navigate the obstacles on foot to check for any unseen dangers.

Sailors with Medical Logistics Company, Combat Logistics Regiment 25, 2nd Marine Logistics Group practice changing the air filters on a Portable Patient Transport Life Support System device aboard Camp Lejeune, N.C., Nov. 5, 2013. PPTLSS is scheduled to replace the military’s current life support systems, combining five pieces of essential equipment into a single, lightweight device. - Sailors with Medical Logistics Company, Combat Logistics Regiment 25, 2nd Marine Logistics Group practice changing the air filters on a Portable Patient Transport Life Support System device aboard Camp Lejeune, N.C., Nov. 5, 2013. PPTLSS is scheduled to replace the military’s current life support systems, combining five pieces of essential equipment into a single, lightweight device.