At the longer end of that spectrum is infrared (IR) light, which is used for night vision and other heat-seeking devices.

Just after the rockets hit the airport area today, a Soviet Il-76 jet roared into a steep spiral in the sky, releasing heat flares every three seconds to foil the heat-seeking devices on the guerrillas' Stinger missiles.

He said helicopters equipped with heat-seeking infrared devices were being used trying to pick up any heat from survivors.

With day temperatures reaching 106 degrees in midsummer, infrared heat-seeking devices are useless, bloodhounds cannot track and several officers have been treated for heat exhaustion.

Another novel system that attracted attention was Nakidka, basically a tarpaulin that is draped over equipment to foil weapons guided by radar and heat-seeking devices that create images from the heat of objects.

At the last moment, Remo lowered his body temperature to the point that he did not exist for any heat-seeking device, and fell to the sand.

Chief Mesisca said that firefighters doused the blaze and used a heat-seeking device, called a thermal imaging camera, to search behind the walls for more fire before they left.

The missile is an infrared heat-seeking device with a range of five to six miles.

Army troops, called in earlier in the day, patrolled with dogs and used special heat-seeking devices to search for mortars, but found nothing by 11 P.M.

The more time-consuming search with dogs, heat-seeking devices and sound detectors would be abandoned.