The terrorist attacks of Sept. 11, 2001, led to a rethinking of what security meant in Las Vegas, which fell off an economic cliff when people were suddenly afraid to travel.
The decision comes months after the Department of Homeland Security barred New York residents from the program, citing the state's law allowing undocumented immigrants to apply for driver's licenses.
The Department of Homeland Security says the state's "Green Light" law allowing licenses for immigrants without legal status interferes with security. State officials call it "political retaliation."
The two lanes, which were designed by Delta, were rolled out last month. TSA administrator Peter Neffenger told a Senate committee that "initial results show dramatic improvements."
The Oversight Committee has criticized TSA for giving Kelly Hoggan bonuses despite security problems under his leadership. The agency has also been under fire for long screening lines for travelers.
The airline industry predicts it will see a 4 percent increase in passengers between June 1 and Aug. 31. The travel rush is contributing to the long waits at airport security checkpoints.
Homeland Security Secretary Jeh Johnson hopes that adding staff to security checkpoints will prevent longer wait times that had been projected for this summer.
The machines, pulled in 2013, expose travelers and airport workers to a dose of radiation well within acceptable limits — a factor of 10 below recommended safety standards.
A former taxi driver attacked two TSA agents with wasp spray and a large blade before a sheriff's deputy shot him three times, authorities say. Police say the man has since died, the AP reports.
Grenades and blades were also found. In most cases, people forgot they had them. Our favorite discovery: a knife in an enchilada. The TSA said "the passenger's intent was delicious, not malicious."
