I was checking in at DFW today when I realized two things:
- The TSA at DFW uses the General Electric "puffer" machine on "selected" pax to supposedly check for explosive traces; and
- Since I had gone for target practice yesterday, I probably had Gun Shot Residue on both hands.
On that great source of forensic science,
CSI, they always say that GSR cannot be washed off and stays on the hands for 48 hours or more.
Fortunately, I was not selected for a "puff," (although they picked the woman behind me in line) so I don't know what would have happened, but I am indeed curious:
- Does the G.E. "puffer" machine detect GSR?
- If the machine had "alarmed" for me, what would have happened especially since I was not carrying anything illegal?