I'm an atheist you tool.
Viviane put it succinctly above:
Rebel, you're intellectually lazy, willfully ignorant and have zero critical thinking skills.
You are here to jerk off rather than learn anything.
If you honestly cant come up with the glaringly obvious reason why they might need 15 years to go to the moon when Bush said that then you are likely beyond your abilities in even trying to "discuss" this very subject. I'm not spoon feeding you the answer either, because you clearly dont deserve any help at all on this.