A US Military Officer in charge of finding Stolen Art talks to a Nazi officer who hid the art. This is based on a real operation where the US saved stolen art before it could be destroyed by the Nazis as they retreated into Europe.
A U-boat crew hears the alarm sound and prepares for an emergency dive. After the crew is in position, the captain reveals that it was only a practice drill so they don't get rusty in the event of a real emergency. Such drills help the crew escape the U-boat in the event of a mechanical failure or an attack by an enemy.