Maintainence personnel from the 185th Air Refueling Wing, Sioux City, Iowa, prepare a KC-135R Stratotanker for take-off at Ørland Main Air Station, Brekstad, Norway as part of Arctic Challenge Exercise 2019. ACE 19 is a multinational effort geared toward preparing participants for air operations and cross border training. (U.S. Air National Guard photo by Senior Airman Maria C. Rella)