Yes, they are.
http://www.tsa.gov/approach/tech/ait/faqs.shtm
> Advanced imaging technology safely screens passengers for both metallic and non-metallic threats, including weapons and explosives, which may be concealed under a passengers’ clothing without physical contact to keep the traveling public secure.
Yes, they are.
http://www.tsa.gov/approach/tech/ait/faqs.shtm
> Advanced imaging technology safely screens passengers for both metallic and non-metallic threats, including weapons and explosives, which may be concealed under a passengers’ clothing without physical contact to keep the traveling public secure.