FILE- This May 9, 2016, file photo, shows an air traffic control tower at their gates at Hartsfield–Jackson Atlanta International Airport in Atlanta. With a broken throttle Cathy Lewan, the pilot of a small plane, found herself over the world’s busiest airport and facing calamity, but air traffic controllers guided her to a safe landing at Hartsfield-Jackson Atlanta International Airport on Feb. 14, 2016. On Tuesday, March 14, 2017, Lewan had a reunion with the Atlanta air traffic controllers who were her lifeline. (AP Photo/Mike Stewart, File)