41.   Also Wednesday, Hezbollah said its air defense units fired at Israeli warplanes that violated Lebanese airspace.

42.   Alliance jets also struck three villages surrounding the airport in the area of Zeta, where Yugoslav air defense units are based, TV reported.

43.   Another Iraqi spokesman, quoted by the official Iraqi News Agency, said no air defense units in the area sent electronic signals at the time.

44.   Belgrade was not bombed overnight, but air defense units fired at unmanned spy aircraft above the capital, Tanjug reported.

45.   Besides the U.S. Air Force personnel, there also were Army soldiers who operate a Patriot air defense unit and a signals battalion.

46.   But another Iraqi spokesman, quoted by the official Iraqi News Agency, said no air defense units in the area sent electronic signals at the time.

47.   Electronic welfare as well as nuclear, biological and chemical defense units also took part in the drill, MENA reported.

48.   His comments came just days after U.S. warplanes attacked Iraqi air defense units in northern and southern no-fly zones, saying they were fired on first.

49.   In both cases where U.S. planes attacked Iraqi air defense units in the past week, U.S. officials said the aircraft shot back after being fired on.

50.   In both cases where U.S. planes have attacked Iraqi air defense units in the past week, American officials said the aircraft shot back after being fired on.