When you're watching a show, and you really feel the characters are being too stupid to be believed, it makes it hard to stay in a zone of enjoyment. This episode had a strong cast and some great possiblities but a bunch of MST3K worthy groaner moves by the characters. Normally, I'm all in favor of dark endings, but this one, however laced with the upside message, was a bit much. So, why the heck did the first astronaut disappear on the way back? To set up the idea & leave an empty seat for the callback. Hey, and whenever your bride to be is running away, it's always a good idea to fire at her while either one of you are on the move.