I once worked with a guy who had been a computer tech early in his career. He told a story of moving a computer on a military base up one floor. After the mov

I once worked with a guy who had been a computer tech early in his career. He told a story of moving a computer on a military base up one floor. After the move, the tape drive stopped working - it would glitch every few seconds. He tried everything he could to diagnose the problem. Then one moment while deep in thought he wandered over to the nearest window, where he saw a radar antenna sweep around. Sure enough, the glitches were occurring when the antenna was pointed his direction. The location on the lower floor didn't have direct line-of-sight to the antenna.