Chief Master Sgt. Kevin Howell, 633rd Air Base Wing command chief, speaks to an NCO professional enhancement class about leadership at Langley Air Force Base Aug. 16, 2011. Howell enlisted in the Air Force in January 1983 as an Aerospace Control and Warning Systems Operator. He has served in a variety of assignments in tactical ground and air operations before taking over as the wing command chief in May. (U.S. Air Force photo by Staff Sgt. Logan Tuttle/Released)