DOW1 is a 2008 International WorkStar Doppler On Wheels. It has a MaxxForce Diesel engine. It runs from the local weather observatory and carries two meteorologists, one navigator/EMT, and one driver. It carries a Kubota electric generator, a ladder, and a toolbox of medical supplies. On the rear bed, there is also the radar dish. The command center is in the rear of the cab. It is based off of Dr. Josh Wurman's DOW6, which runs with the VORTEX2 (Verification of the Origins of Rotation in Tornadoes EXperiment 2) tornado research program.