Few airports require employee screening before work
From Fox News:
The revelation comes shortly after a dozen employees at three U.S. airports were identified as having potential ties to terrorists, according to Freedom of Information Act requests filed by FOX 25’s Washington Bureau.
FOIA requests identified two employees at Logan International Airport in Boston, Mass., four employees at Hartsfield-Jackson Atlanta International Airport in Georgia and six employees at Seattle-Tacoma International Airport in Washington.