The Ford Focus driven by Lucas Beery pulled over to the center median area. Trooper Aspens conducted the traffic stop with his emergency lights activated. during the traffic stop, the Trooper's squad was struck in the rear by a Ford Fusion driven by 22-year-old Briana Stadler. the crash caused the Trooper's squad to be pushed into the rear of the Ford Focus. Trooper Aspens was outside of his squad at the time of the crash and was not injured.