In the United States, 40 of these advanced imaging machines are in use in 19 airports, according to the TSA. Only in six airports are they used as a primaryscreening option.
Responding to a question about privacy during screening, Napolitano said that authorities consider privacy issues, but their primary concern is protecting the flying public.
One of the first mutual funds to incorporate socially responsible screening was the Pioneer Fund (PIODX), which since 1950 has avoided the stocks of companies whose primary business is alcohol or tobacco.