Airman 1st Class Shawn Deroy, 375th Logistics Readiness Squadron, laughs at a joke during Bernie McGrenahan's "Happy Hour" comedy tour April 11, 2013, at the base auditorium. Instead of using powerpoint, statistical charts and videos, which are common training tools used in the Air Force, McGrenahan uses humor to set up the serious training session which focused on the dangers of alcohol, drugs, sexual conduct and suicide. (U.S. Air Force photo/Staff Sgt. Maria Bowman)