Pre-flight with Lt.Dineen
YOKOTA AIR BASE, Japan -- Senior Airman Christopher Sanchez, 374th Operations Support Squadron, assists 1st Lt. Evan Dineen, 36th Airlift Squadron pilot, with his HGU-55P flight helmet at Yokota Air Base, Japan, Sept. 27, 2011. The HGU-55P helmet is required for all tactical missions and offers safety and communication support for flight crew members. (U.S. Air Force photo/Airman 1st Class Krystal M. Garrett)