Staff Sgt. David Richardson, 366th Civil Engineer Squadron, learns how to assemble a heating, ventalation and air-conditioning unit during a multi-capable Airman training, Jan. 23, 2020, at Mountain Home Air Force Base, Idaho. This training was conducted to equip Airman with skills from other career fields to enhance their readiness. (U.S. Air Force photo by Senior Airman Tyrell Hall)