U.S. Air Force Staff Sgt. Brian Batty, 31st Operations Support Squadron Weather Flight airfield services NCO in charge, uses a laser range finder to determine the visibility around Aviano Air Base, Italy, April 10, 2013. The LSR helps forecasters during times of fog, rain and snow to determine the maximum visual range, which helps determine when aircraft are safe for takeoff. (U.S. Air Force photo by Senior Airman Jessica Hines/ Released)