I would have voted for Alicia Witt:
Bumping a month-old thread because I was wondering what happened to the Quaid babies. Anyway, I'm not looking forward to this movie, but I don't understand the people saying Quaid is too old. He's playing Hawk! Hawk is a general and isn't typically in the field with the other Joes. Political views aside, I think he can physically fit the bill alright.