All airport workers with access to airplanes and secure areas have been ordered to submit to new criminal background checks. Employers will also be asked to assist authorities in new criminal background checks of “flight-safety sensitive” personnel. The FAA is requiring the revalidation of all airport IDs to make sure they are current, genuine and correspond to the person carrying them. This revalidation effort follows reports that box-cutting tools found on two airliners since the terror attacks may have been planted there by individuals other than passengers who had access to airliners.