Thanks for posting this. My Dad was stationed in Brooklyn and the New Jersey Depot when he was stateside during the war. And though he was in the Atlantic NAG he got a pacific theatre ribbon in late 1942. His first of 3 trips around the world during the world.
I have photographs of him training on the East River, NYC in the background. And have gone to the former Guard Center myself. The Brooklyn navy Yard Museum should add an exhibit on the NAG.