Beale Air Force Base, California -- Two KC-135 Stratotankers from the 314th Air Refueling Squadron with the 940th Air Refueling Wing practice a two-ship tactical formation training sortie during a unit training assembly at Beale Air Force Base, California on Feb. 11, 2017. The 314 ARS have to formation train for tactical purposes and the unit training assembly is an opportune time for traditional reserve maintainers and pilots to all train and fly together. Early Saturday morning, between the two aircraft they refueled eight F-15 Eagles from the 173rd Fighter Wing stationed at Kingsley Field Air National Guard Base, Oregon. The 173 FW mission is to train the most superior air-to-air combat pilots in the world.