"Bullets are this small-well, usually pretty small-kind of ammo. They're...kinda like arrows without the stick, I guess. Small things you fire at people. And a nuke's a really big kind explosive device-one of the ones that can wipe just about everything out. We came pretty close to getting blown up by one today," he grumbles.

Sheppard unholsters his handgun and holds it up to show Ian. "This is what we fire smaller bullets with-it's a handgun. It can't stop everything, but if you aim right, it can take care of some things."