Rumor has it that there was someone else in that capsule with them. As far as being lost in the secret space program, it would seem that they wouldn't use the same pool of astronauts so blatantly if they are assigned to a mission already, but who knows...
For those who want to try this but don't have Photoshop, here's a link to a freeware Photoshop copy that rocks fairly hard so you can try on your own.
GIMP