To prevent damage to aircraft as they are moved in hangars, charter and aircraft management provider Talon Air, based at Republic Airport on New York’s Long Island, has installed in two of its hangars a new Optex Redscan laser-scan perimeter-detection system that will warn pilots and hangar personnel when part of an aircraft comes within eight feet of the walls. The system’s four laser scanners detect a moving object and determine size, speed and distance from the detector. The scanners create a 200-foot-wide area that acts like an invisible wall and set off alarms when anything passes through it. To avoid false alarms, such as from people moving in the hangar, the system detects only objects eight feet above the ground.