Sergeant Billy Randolph was struck and killed at a crash scene on Interstate 35 near Sycamore School Road at 5:30 a.m. this morning. A tractor-trailer collided with a guardrail and caught fire. During the clean-up, Sergeant Randolph was standing outside his patrol vehicle when a vehicle drove through barricades and struck him. He was transported to John Peter Smith Hospital where he died from his injuries. The driver has been apprehended. Sergeant Randolph was a United States Air Force veteran and had served with the Fort Worth Police Department for 29 years.