Here we see a pair of US Air Force Pararescue Jumpers (PJs) tending to an injured fellow servicemember.

PJs are members of Air Force Special Warfare. Their mission is to medically treat downed warfighters wherever they may be. They do it all, parachute, dive, climb mountains…in short, they can function, and function well, in any environment.

Click here for Pararescue: A Day in the Life, written by Brandon Webb.

If you really want to take a deep dive (no pun intended), click here for the official Air Force PJ page.  On the site, you can download a 21-day fitness program designed to get you ready to try out to see if you qualify for PJ training.