Back-Tracking highlights interesting, lesser-known moments in skydiving through the years. These photos are often unearthed from boxes in the attic, old photo albums and dimly lit DZ closets. Please send submissions to communications@uspa.org.

In November 1965, the U.S. Army Parachute Team incorporated a week of high-altitude training at Brooks Air Force Base in Texas into its demonstration schedule. While the course was normally for pilots, it was adjusted to qualify thirteen skydivers to use a pressure suit (the MC-3A) that could be jumped from altitudes exceeding 43,000 feet. Here, Sgt. William Wise prepares for a ground-chamber simulation of a flight to 75,000 feet.