OK - I didn't locate any pictures when I first searched ... Those are some Old Pictures that you cannot tell anything about who much less make out any details.
I'm not progressive BTW I am a registered republican. Just one that isn't paranoid about radiation and frisking.
There is a difference between frisking ( even agressive frisking ) and sexually molesting someone.
As for the Back Scatter machine and radiation here are the actual facts:
http://www.fda.gov/Radiation-Emitti...tsandProcedures/SecuritySystems/ucm231857.htm
The established standard for radiation exposure for the general public from man-made, non-medical sources is 1,000 µSv (microsieverts) per year. One microsievert is one millionth of a sievert, and if youre familiar with the now-outdated measure of rem, a sievert is 1/100 of a rem, so these are tiny little numbers.
Since its not possible to control all sources of radiation exposure, the general rule is to try to keep it under 250 µSv per year from sources that can be controlled. For a radiation-emitting machine to be considered general use, as the backscatter machines are required to be by TSA,
it has to emit 1,000 times less than the 250 µSv limit for each use, or 0.25 µSv. The backscatter machines have passed that in every test. In fact, it appears that the machines actually emit 0.05 µSv per use. That means that a person could go through the machine 13 times a day for every day of the year and still not have exceeded the limit.
But there was also concern that since the exposure is primarily focused on the skin, that could be a problem area even if the general exposure was not.
According to the letter, the annual dose limit for skin exposure is 50,000 µSv per year. Even if the machines emitted the required 0.25 µSv (higher than what it actually is), it would take nearly 250 exposures per day to reach the skin limit.