In the final scene where The Three Stooges turn into angels after getting blown up by the submarine, Larry Fine asked director Del Lord to make him the low man, due to his being afraid he might fall. The wires hoisted Larry up high, anyway, and he started screaming. Lord responded, "You are up there and going to stay up there until we finish the goddamn shot!". Larry did as he was told.
During the sequence where Curly Howard is stuck to a spring, you can hear crew members laughing out loud along with Vernon Dent, something that almost never happens in a short by The Three Stooges [xxxxx]. Also, Curly injured his head while falling on the floor and hitting a table.
Production #419.