U.S. Air Force Senior Airman Dylan, a pararescueman with the 48th Air Expeditionary Group, rappels down the side of a glacier while participating in Icelandic Air Policing near Keflav?k, Iceland, May 18, 2014.
U.S. Air Force units participated in a NATO-sponsored exercise designed to bolster aerial refueling, fighter aircraft interception and combat search and rescue skills. (DoD photo by Tech. Sgt. Benjamin Wilson, U.S. Air Force/Released). Original public domain image from Flickr