Senior Airman Anthony Wachob, a member of the 821st Contingency Response Group, radios in from a defensive fighting position while on perimeter watch at Qayyarah West Airfield, Iraq, Nov. 17, 2016. The 821st CRG is highly specialized in training and rapidly deploying personnel to quickly open airfields and establish, expand, sustain and coordinate air mobility operations in austere, bare-base conditions. (U.S. Air Force photo/Senior Airman Jordan Castelan)