Loading bombs. Probably in the 546th dispersal area. Note the K visible n the ship in the background.
Source: Robert Bletscher, 2011.
Bletscher: "I had sent someone to copy the records, but unfortunately they were too big to be copied on a regular scanner. The Agency Chief at the Air Force Historical Research Agency at Maxwell AFB, in Alabama, decided that they were records that should be preserved, and as a result had his department take care of them."