Neither of the girls were wearing seatbelts and were thrown from the vehicle. Two adults who were in the car suffered injuries and were hospitalized. Possibly alcohol and speed may have been factors in the crash. Halsell is in the Tuscaloosa County Jail. The investigation is ongoing. Halsell was selected as an astronaut in 1990 and spent more than 1,250 hours in space. He participated in five spatial missions and helped lead NASA back into space after the space shuttle Columbia disaster. Following his retirement from NASA a decade ago, Halsell worked for ATK Launch Systems, Utah.