Corporal Jesse A. Ambrose, right, an automotive maintenance

Corporal Jesse A. Ambrose, right, an automotive maintenance mechanic, and Lance Cpl. Andrew D. Fleming, a refrigeration and air conditioning technician, both with 2nd Radio Battalion, II Marine Expeditionary Force Headquarters Group, learn how to set-up and work with AN/PRC-117F Multiband Manpack during a communication exercise aboard Camp Lejeune, N.C., Dec. 9, 2014. The Marines practiced matching frequencies and calling to each other over the radios from a distance. (U.S. Marine Corps photo by Lance Cpl. Kaitlyn Klein/Released)