The recent hullabaloo over sleeping air traffic controllers dragged mercilessly through the media, and for what? Fingers point, careers end, and silly notions trot.
Anyone ever hear of Skype? How hard would it be to have each air traffic controller see & hear four other controllers on a computer in the tower? Add several loud, annoying ringtones on their cell phones, and voila, no more sleeping on the job.
And how much would it cost? How does zero sound to you?