What are the minimally accepted standards (benchmark) for security
devices such as metal detectors and x-ray machines...sensitivity,
penetration, etc. i've looked at the tsa website but didn't find much
there or i was looking in the wrong place. i've looked at different
manufacturer's websites but they don't seem to compare themselves to
any one standard or benchmark. some sites i've visited:

http://www.rapiscansystems.com/mailnsmallparcel.html
http://www.ice.gov/graphics/fps/index.htm
http://www.securitysolutionsdirectory.com/Weapon_Detectors_27f1b914/page_2.html
http://controlscreening.com/
http://www.adt.com/comm/