As seen through a night-vision device, U.S. Marine Corps Gunnery Sgt. Marcus S. McCollum provides aerial security over Helmand province, ...

U.S. Navy Seaman Kendahl Chmara, left, signals to the USNS Arctic as U.S. Navy Petty Officer 3rd Class Matthew Michela gives commands to r...

U.S. Marine Lance Cpl. Nicholas Moore shouts orders to his team during during Khaan Quest 2013 at Five Hills Training Area in Mongolia,...

click to enlarge An Indonesian army paratrooper prepares to fire an M240B machine gun during weapons training with U.S. paratroopers ...

Battleship Division Two: In line abreast formation, 7 June 1954, in the Virginia Capes operating area, on the only occasion that all four...

U.S. Army 2nd Lt. Nicholas Prieto, right, keeps his company commander informed of his platoon’s progress during a mission to sweep a road f...

Near Nawa Garay village in the Kajran district of Afghanistan's Daykundi province, April 3, 2012. U.S. Navy photos by Petty Officer 2nd...

U.S. Marine Corps Lance Cpl. Brandon Mann uses his automatic rifle's scope to scan the area while providing security with his military ...

Soldiers assigned to the Republic of Georgia's 23rd Light Infantry Battalion keep a watchful eye on the surrounding area after a prac...

U.S. Marine Corps Cpl. William Cox provides security as an MV-22 Osprey aircraft lands in Zaranj in Afghanistan's Nimroz province, Dec...

U.S. Navy SEALs exit a C-130 Hercules aircraft during a training exercise near Fort Pickett, Va., Dec. 8, 2011. U.S. Navy photo by Petty Of...

Marine Corps Cpl. Steven Johnson rescues a pilot from a tree during a practice exercise for a Surface Tactical Recovery of Aircraft, Person...

U.S. Marine Corps Cpl. Zachary O'Neill, right, provides security during a recent patrol through the Kajaki Bazaar in Helmand province, ...

Click to Enlarge U.S. Marince Corps Lance Cpl. Theodore McCormick prepares to load an amphibious assault vehicle to begin Clear, Hold, B...

U.S. soldiers fire 120mm mortars from their Stryker MCV-B during crew certification at Fort Lewis, Wash., May 30, 2008. The soldiers are as...

A U.S. Air Force F-16C Fighting Falcon, flying in a two-aircraft formation, launches electronic countermeasure flares, following an aerial ...

The aircraft carrier USS Ronald Reagan travels through the Pacific Ocean with other ships assigned to the Rim of the Pacific 2010 exercise,...

A U.S. Army soldier searches the houses of the Suleimanzi village during a patrol in west Paktika province, Afghanistan, Aug 21, 2010. The ...

U.S. Air Force Staff Sgt. Alfonte Thomas lies in the prone position providing security during a dismounted patrol while attending a combat ...

U.S. Army 1st Lt. Steven Rose launches an RQ-11 Raven unmanned aerial vehicle near a new highway bridge project along the Euphrates River n...