Staff Sgt. Ryan Birk, Thunderbird 5 assistant dedicated crew chief, wipes down his aircraft in preparation to launch for the Oregon International Air Show, Aug. 4, 2012.


Staff Sgt. Ryan Birk, Thunderbird 5 assistant dedicated crew chief, wipes down his aircraft in preparation to launch for the Oregon International Air Show, Aug. 4, 2012.


Size: 4256px × 2831px
Photo credit: © 508 collection / Alamy / Afripics
License: Licensed
Model Released: No

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