Nantz and his marines using the LAV-25 Stryker.

This vehicle was used to help transport and to help protect the civilians from the unknown alien species. It carried the survivors to the spot where the helicopter was waiting. It was soon abandoned along with the humvee

The LAV-25 is a completely different vehicle from the striker. LAVs are driven by the United States Marine Corps and Strykers are used by the United StatesArmy. The vehicle in this movie is an LAV-25