Another heroic civilian was George Walters, a dockyard worker who used a rolling crane positioned alongside the battleship USS Pennsylvania. When the yard was fired at during the beginning of the raid, he valiantly moved his crane back and forth on its track, effectively blocking Pennsylvania from low flying dive-bombers and fighters. Gunners on the Pennsylvania considered the dockworker a nuisance at first, but they soon realized that his 50-foot-high cab gave him an excellent view of incoming zeros. Using the movements of the crane arm, they were able to return fire against the enemy. Walters continued his maneuvers until a Japanese bomb exploded on the dock and sent him to the hospital with a concussion. This proves that people reacted