One of the 'mobile chemical labs' was captured and pictures were sent out to prove to the world that they existed. Right wing Pitch-men made a big deal about this and praised Bush and Rummy until the photos were determined to be something very different.

They were in fact mobile weather stations that were necessary for launching SCUD rockets. The winds aloft and the humidity are critical to the guide systems of a SCUD, so a weather balloon is always launched to measure these items.