Updated: 03/10/2009 7:40 PM KSTP.com | Print Story
By: Nicole Muehlhausen, Web Producer
INVESTIGATION: 'Serious problems' found at nation's airports
5 EYEWITNESS NEWS goes undercover at some of the largest airports in the nation to reveal what security experts are calling serious problems.
Employees are often allowed to enter secured areas of airports at night without anyone checking their identification badge or the bags and other belongings they bring into the so-called sterile areas.