Department of Homeland Security Secretary Janet Napolitano will announce a new layer of airport security Friday, said an AP report.

The new security measures will supersede the measures put in place immediately after the attempted terror attack on Christmas Day 2009, the report said, adding that the new measures utilize multiple, random layers of security, both seen and unseen and are tailored to intelligence about potential threats.
The new measures are a result of a review President Obama ordered after the December 25 attack.