A van carrying ten firefighters crashes into a semi truck early this morning, left ten of the van's occupants injured, one critically. Oregon State Police say the van's driver had fallen asleep. The crash occurred around 2 a.m. on Hwy 126 west of Prineville. The van drifted into the westbound lane and crashed into a truck. The drivers of the truck and van were not injured. The firefighters were headed to the John Day area to assist efforts at a wildfire.