Originally Posted by SonOfACockroach
I don't think you could put all three technologies in a combination unit, since you are supposed to walk through the WTMD, and the puffers require that you stand there for a few seconds. That said, I would conditionally (I'm not very knowledgable on the subject of back scatter) support the use of this technology in lieu of secondary screening. Hopefully, the TSA would have the brains to buy more machines, to take advantage of the resulting reduced staffing requirements, to improve the situation with delays.
In all honesty with the use of the back scatter the WTMD could be eliminated since the back scatter could detect both metallic and non metallic items.