Dominator

The SRV Dominator is a brightly red colored, modified 2007 Chevrolet Tahoe with bullet proof windows, a hydraulic lowering

system which prevents wind from getting under the vehicle, and aerodynamics for high speed. It has the ability to deploy

a probe, V-W-R, and multiple high definition cameras.

Dominator 2
From Wikipedia: "In early 2011, Timmer and other members of TVN purchased a 2011 GMC Yukon XL, which would be the base vehicle for a second Dominator vehicle named Dominator 2. Changes from the first Dominator are said to include a flex fuel engine, improved aerodynamic streamlining, swiveling rear passenger seats, improved hydraulics, and upgraded armor protection as well as anchoring spikes that could allow it to engage tornadoes stronger than those the original Dominator could safely face. Timmer also stated that both vehicles would be used with one going into tornadoes to gather data from inside the funnel while the other would collect data from just outside the tornado, with the intention of comparing the two sets of data. The second generation Dominator features reinforced sheet metal and transparent Lexan has been strengthened with higher-quality steel and an additional LINE-X coating. This shell is firmly affixed to the frame and chassis of the GMC Yukon. The new model retains a roll cage and racing-car safety seats with full-torso belts for added crew protection."

The Dominator 2 first chased in the tornado outbreak of May 21-26 in central Oklahoma.

Dominator 3
In April 2013, Dominator 3 was built out of a 2013 Ford Super Duty. It would have an electric winch, hydraulic anchoring spikes, and gull-wing doors.

It was first used in the tornado outbreak of May 18–21, 2013, intercepting an EF4 three times during the storm.