US Army Cavalry Scout breaks down every piece of gear in his 72-hour bag

• A US Army Cavalry Scout is known as the "eyes and ears of the battlefield."
• One of their most important tools is a $13,000 radio used for communication. 
• The typical weight of a Cavalry Scout's 72-hour bag is 30 to 35 pounds.

A U.S. Army Cavalry Scout breaks down every piece of gear he carries in his "72-hour bag," including weapons, field rations, and radio components. Staff Sergeant Jeffrey Haynes explains why each item is integral to the mission of the Cav Scout, known in the Army as the "eyes and ears of the battlefield."