Corrected entry: Wilkins and the rest of the Air Force team running this exercise are supposedly at Whiteman Air Force Base, Missouri, as stated by Pritchett when he's talking about the reporters in lawn chairs. There is no way they would have felt the tremors from an underground explosion in Utah.
Jazetopher
11th Dec 2006
Correction: Pritchett states that the "jet" took off from there, and that the lawnchair campers are going to know that it did not come back. Then Pritchett hops on a private jet, and flies to meet the Air Force Team at their underground base in Utah. No one in Missouri is ever shown feeling the tremors at all, it's the base in Utah that is shown after the bomb goes off.
Jazetopher