Powering up the mission
WHITEMAN AIR FORCE BASE, Mo. -- Airman 1st Class Devin Laird, 509th Civil Engineer Squadron electrical systems apprentice, uses a multimeter to test the voltage of a constant current regulator, Jan. 29. The constant current regulators supply electricity to systems that power airfield lighting fixtures. (U.S. Air Force photo/Staff Sgt. Nick Wilson) (Released)