Other mistake: When Amy runs out of the basement wearing Robert's pants, the pants are at full length, with the belt under her arms and the bottom of the pant legs at her ankles. When she is standing next to Robert, though, it is clear that he would have to pull the pants all the way up to his ribs for the legs to be the right length on him. Also, the pants are unzipped and the zipper pull is hanging just below Amy's breasts. Since a pants zipper is usually just an inch or so above the crotch, Amy would not be able to pull the pants that high unless there was a 12" drop between the zipper and the crotch of the pants.
Other mistake: Early in the episode, Frank turns on the heater and the family discover a bottle top in one of the vents Ray has thrown from a party he held 20 years ago. This couldn't have been the 1st time the heater had been used in that amount of time. (00:03:00)
Other mistake: Marie and Ray's stateroom has a porthole in the back wall, but the hallway outside runs perpendicular to the wall with the porthole in it. This would only be possible if their stateroom was hanging off the side of the ship.
Answer: War.
By whom?
Edwin Starr.