Airman 1st Class Alan Stokling, 374th Operations Support Squadron air traffic controller, keeps track of aircraft information March 20, 2010 during the Kanto Plain Mid-Air Collision and Avoidance Conference, Yokota Air Base, Japan. The MACA conference brought together military and civilian pilots from all over Japan to focus on flight safety and base flight procedures. (U.S. Air Force photo/Airman 1st Class Sean Martin)