Staff Sgt. Sam Moran, a 28th Civil Engineering Squadron structural craftsman, and Senior Airman Joshua Grimm, a 28th CES structural journeyman, low-crawl during a battle buddy hill climb competitive event on Ellsworth Air Force Base, S.D., June 11, 2021. The competition was part of the Prime Base Engineer Emergency Force (BEEF) Challenge, which consisted of six events meant to simulate the stressful and exhausting environments Airmen could encounter while downrange. (U.S. Air Force photo by Airman 1st Class Quentin K. Marx)