Matthew Livelsberger, who has been identified as the sole occupant of the truck, was an active-duty Green Beret who served in the Army for 19 years. According to the Army, he had been a soldier ...

Lt. Col. Scott Mann is a retired Green Beret in the US Army as well as the president of MannUp Leadership Training. He describes how the Green Berets and the US Navy SEALs are different.