Many years ago, way back in the 70's I used to go to Mare Island near Vallejo, CA. It was a US Navy mothball fleet yard at the time. The base was open although you had to pass through a guarded gate. Near the rear of the base was a gym. There were several glory holes in the shower/dressing room heads.
It was fairly busy all day and night. All ranks, branches and civilians as well.
Ah, the good old days.:sigh1: