sentences:  The third axle was disconnected from the drive train, thus changing TIV2 to 6×4 from its 6×6 design.The third axle now acts as a brace for the vehicle's weight.The TIV 2 appeared again in the fourth season of "Storm Chasers", and also in an episode of another Discovery Channel series, "Mythbusters", wherein both the TIV 2 and the SRV Dominator vehicle operated by Reed Timmer of TornadoVideos.Net were tested to determine their endurance to storm-force winds by being parked behind a Boeing 747 with the engines at full throttle.