Business Insider: Robert L. Cunningham

A U.S. Navy Commander works on mission planning in his office at Salerno. Due to the constant threat of incoming rounds, the Commanders armor is stored within reach. Published by Business Insider.

A U.S. Army sergeant instructs members of a select Afghan National Armys Commando unit in the use of the M249 Squad Automatic Weapon. The ANAs Commando units are referred to as Kandaks and usually consist of 600 commandos. Published by Business Insider.

Members of the Afghan Border Police share a laugh with local children during a patrol in eastern Afghanistan. ABP officers patrol a 55 km-wide corridor along the entirety of Afghanistan's border, secure international airports, administer immigration services, and handle anti-narcotic efforts. Published by Business Insider.

Solders from the U.S. Armys 1st Battalion, 26th Infantry Regiment scan the area around their base while testing a newly-fielded rifle system. The 26th Infantry Regiment was founded in 1901 and has served in World War I, World War II, Vietnam, and the Global War on Terror. Published by Business Insider.

Soldiers from the U.S. Armys 1st Infantry Division, with aid of an interpreter, demonstrate methods for controlling a suspect to officers of the Afghan National Police. Published by Business Insider.

UH-60 Blackhawks from the US Armys 10th Mountain Division perform a resupply of a Combat Outpost in eastern Afghanistan. These missions often consist of moving troops from one base to another. Published by Business Insider.