Fernando Costilla Espinoza, 38, a Mexican national, was found asleep behind the wheel of a locked pickup truck at a Pensacola intersection just before 3 a.m. on Sunday. An Escambia County Sheriff's sergeant positioned his patrol vehicle in front of the truck to prevent it from rolling into traffic. When Florida Highway Patrol troopers arrived and woke Espinoza, they observed signs of alcohol impairment. He was arrested on DUI charges, and ICE placed a detainer after determining he was not in the United States legally.