1.   It was the fourth major search for a downed airplane in the same general area during the past three years.

2.   The trainer will be able to simulate fires involving hazardous materials, a kitchen blaze and a downed airplane.

3.   In February, the Cuban military downed two civilian airplanes flown by an anti-Castro exile group based in Florida.

4.   No trace of the downed airplane has been found.

5.   The spokesman said the plane crashed moments after locating the downed airplane, which belonged to the Ecuadorean company Aeroturismo.