Previously expected to land in the ocean near Bermuda, the fragment instead strikes Tampa, vaporizing the city along with most of the state. John then receives a call with instructions to head to Robins Air Force Base for an evacuation flight, as Clarke is on a direct collision course to Earth and the impact will cause an extinction level event in two days. John, Allison, and Nathan pack up and drive away. The way to the base is clogged by heavy traffic, so the Garritys abandon their car and continue on foot. Nathan’s insulin is accidentally left behind in the car. As they reach the base, John realizes it is missing and goes back to retrieve it. Meanwhile, Nathan’s medical condition is discovered, disqualifying him for sheltering, and Allison stays with him.