A U.S. Airman with the 23rd Special Tactics Squadron (STS) swims to a boat after rescuing a simulated crash victim at Whynnehaven Beach, Fla., April 10, 2013.
The 23rd STS trains, equips and employs combat control, pararescue and support personnel in response to presidential and secretary of defense tasks. (DoD photo by Airman 1st Class Christopher Callaway, U.S. Air Force/Released). Original public domain image from Flickr