![](http://www.alamy.com/thumbs/6/DEC0762A-ED47-4B03-AB09-D6AB01277844/PF1JNW.jpg)
Army Sgt. Phil Buettner, a crew chief at C Company, 5th Battalion, 159th Aviation Regiment, replaces a main rotor blade tip on a UH-60 Black Hawk at the Army Aviation Support Facility, in Cheyenne.
Size: 2336px × 4928px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: guard, mechanic, national, wyoming