From this [1]:

In the latest of many shameful lapses, the federal agency in charge of securing the nation’s transportation system approved background checks for a dozen illegal immigrants working in sensitive areas of a busy U.S. airport.

The illegal aliens, from Central America and Mexico, worked in operational areas of Stewart International Airport, a 2,400-acre facility located about 60 miles north of New York City. Stewart is a major passenger airport for the state’s mid-Hudson region that also handles large quantities of cargo and serves as a military field... ...[the TSA gave] the undocumented aliens "trusted agent" security badges. This allowed them to work at an airport warehouse business and access key operational areas. An alert airport employee noticed the suspicious documents and reported the illegal aliens.

[1] I noticed a "problem" at Judicial Watch's site several months ago and they corrected it after I notified them. However, a bit of caution is suggested.