GREENSBORO, N.C. – The Piedmont Triad International Airport is hosting a TSA PreCheck enrollment event. Travelers will be able to enroll from Nov. 11 to Nov. 15 at the PTI airport. Hours for the event are from 9 a.m. to 12 p.m. and 1 p.m. to 5 p.m. The program is open to U.S. citizens, U.S. nationals, and lawful permanent residents, according to the PTI Airport.