Tim Devine, 436th Aerial Port Squadron blocker, bracer and crane operator, nails a two-by-four to a flatbed trailer May 4, 2015, on Dover Air Force Base, Del. Nailing pieces of wood in front of the front tires and behind the rear tires of rolling stock helps to prevent movement and damage during shipment. (U.S. Air Force photo/Roland Balik)
Roland Balik
Taken on 4 May 2015
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