1.   And there are ethical implications of fielding an unmanned combat plane.

2.   A protracted war against terrorists might involve even more lethal unmanned planes that could attack antiaircraft sites or other heavily-defended targets.

3.   But a videotape from an unmanned Predator spy plane showed Roberts being dragged from the scene by al-Qaida fighters.

4.   If anything, Cote and others say, the Pentagon has been far too slow in embracing the idea of unmanned planes.

5.   Military strategists almost universally look to unmanned planes as a key American asset in whatever fight the United States undertakes in the rugged wilds of Afghanistan.

6.   The Pentagon acknowledged, however, that it had lost an unmanned Predator spy plane over Afghanistan.

7.   The small unmanned planes, an IAI specialty, proved a key reconnaissance weapon for the U.S. Army in Kosovo, prompting other NATO orders.

8.   A group of smaller companies, such as General Atomics in San Diego, maker of the unmanned Predator plane, continue to compete for specialized weapons systems.

9.   A unmanned NATO spy plane lost power on a mission over southern Kosovo and was forced to make a parachute landing early Saturday, a U.S. Army statement said.

10.   A U.S. military official in the Gulf said an unmanned plane is missing and its loss was being investigated.