Young fired back several times, emptying his gun and reloading.
Grand County sheriff's Deputy Al Cymbaluk and Moab police Officer Shaun Hansen heard Young's radio call for help and were first at the scene. Cymbaluk said he arrived to find Young trying to sit up and find the shooter, who had fled in the Pontiac.
Authorities still have not located Arellano, who fled into the desert with a gunshot wound he suffered in the shootout with Young.
Young spoke publicly about the shooting in a May ceremony at the state Capitol, where he thanked colleagues who helped save his life.
Young crawled 30 feet back to his truck to call for help after being shot. Bullets were lodged in his lung, heart, shoulder, back, hip and groin.
"I was laying on the ground, and I could hear the [radio] traffic 'Let's get the helicopter' and I knew they were coming," he said in May at the state's annual emergency medical services awards ceremony, which honored 20 people who helped save Young after he was shot.
Young could not be reached for comment on Sunday, but posted on a Facebook page called "Ranger Brody" on Dec. 13 that he was ready to return to work.
"Merry Christmas everyone! I have been cleared to work full time as of the 28th of November. I signed the last Workers Comp check. Feelin' good," Young wrote. "A year ago yesterday I regained consciousness [as far as I can remember]."
He and his wife, Wendy, reside in Moab with their three young children.