When you hear the beep... Published Dec. 7, 2009 GRISSOM AIR RESERVE BASE, Ind., -- Staff Sgt. Ryan Waddell, right, medical technician with the 434th Aerospace Medicine Squadron, right, instructs Senior Airman Brandon Galus, a crew chief with the 434th Aircraft Maintenance Squadron on the details of taking a hearing test. Hearing tests are a critical item for any personnel working in or around exceptionally loud noise areas. (U.S. Air Force photo/Staff Sgt. Chris Bolen)
