When the Secretary of Defense is looking at the computer screen, it states that a nuclear bomb will be delivered by a B-2 bomber. But the plane they show is an SR-71, which is a spy plane and isn't capable of carrying any bombs, let alone a nuclear one.
On General Railen's first helicopter flight during the storm, she's told that GPS is out. She asks what their last location was before GPS went out and the pilot says Nevada. Not knowing where they are at the current time, she tells the pilot to land and they end up exactly where they were supposed to be.