PHOTO - Authorities say a Ventura County firefighter has died after the truck he was in rolled over multiple times Wednesday morning. Ventura County Fire Chief Mike Lindbery announced the tragic loss of Fire Engineer Ryan Osler in line of duty vehicle accident just moments ago. The accident happened around 6:20 a.m. on State Route 246 at Purisima Road in Lompoc. Officials on the scene of the accident say two firefighters were in the Ventura County water tender truck when it crashed. The passenger was killed, while the driver suffered only minor injuries. it is not clear what caused the accident but authorities are investigating.