1.   A thermal imager uses detectors of cadmium mercury telluride, which detect infrared radiation when they are cooled to very low temperatures.

2.   At issue is whether the officers violated the Fourth Amendment by failing to obtain a warrant before aiming the thermal imager at the house.

3.   In addition, the Fire Department has been given several thermal imagers, a kind of equipment lacking at the time of the blaze.

4.   The thermal imager was designed specifically to identify the mineral composition of Mars, including carbonates and other substances that form on Earth in the presence of water.

5.   Drug agents used a thermal imager to try to figure out what was going on in the home of Danny L. Kyllo.

6.   If they escape border guards and thermal imagers, they head for the hills.

7.   Kyllo contends that his Fourth Amendment rights were violated because the officers did not obtain a search warrant to scan his house with the thermal imager.

8.   The Light Reaction Company handed down Motorola walkie-talkies with headsets to the Rangers and received new rifle-mounted grenade launchers, thermal imagers and other equipment.

9.   Portable thermal imagers and other night observation equipment are used along with throat microphones -- which enable whispers from surveillance officers to be heard back at headquarters.