The scene when A.J. uses the Armadillo's mounted gun to blast through their Shuttle.
"This is one order you shouldn't follow and you FUCKING know it!"
"Houston. You're not going to believe this but the other Armadillo has arrived."
After the world realizes they're saved, there is a shot of a new generation of kids inspired by NASA, representing the future's likely renewed interest in space exploration, running past a mural of President Kennedy, who started the whole thing.