Down the road from the airport, Ballygirreen houses the North Atlantic Communications Centre, where those voices speak out into the dark, and listen in. It's a terrifically busy place and yet one of calm efficiency, handling 400,000 flights in the Shannon and Prestwick airspace - or Shanwick - which reaches into the mid-Atlantic, covering three million square kilometres. There are many stories, from the dramatic events on 9/11, unruly passengers requiring a flight diversion, to romances between local women and the men who came to build Ireland's aviation history and stayed.
Also on R4, including LW
You can listen to the full report on Radio 4's Archive on 4 on Saturday 19 April at 20:00 BST