eogden@minotdailynews.com Submitted Photo Staff Sgt. Alex Graves and Maj. Zach Roycroft perform preflight checks for the first time on the Air Forceâs newest helicopter, the MH-139A Grey Wolf, at Eglin Air Force Base, Florida, shown in this Air Force photo. Graves, an Air Force Global Strike Command Detachment 7 special mission aviator, and Roycroft, 413th Flight Test Squadron test pilot, were part of the aircraftâs first combined test flight Feb. 11, 2020. The Grey Wolf is set to replace the Air Forceâs UH-1N Huey fleet. MINOT AIR FORCE BASE – It’s still a ways off yet but...