LANGLEY AIR FORCE BASE, Va. -- Master Sgt. Richard Thompson, 1st Security Forces Squadron combat arms non-commissioned officer in charge, explains the M-240 bravo machine gun to Mrs. Bianca Martinez, WTKR Channel 3 broadcaster, here March 23. Mrs. Martinez started a series entitled "Do My Military Job," which allows her to learn about various jobs within each branch of the military. (U.S. Air Force photo/Senior Airman Vernon Young)