1.   Once in a while pilots would actually penetrate Soviet airspace, intentionally or unintentionally.

2.   Military aircrews have penetrated Iranian airspace during mock combat drills to test their ability to elude Iranian radar, the official said.

3.   The Ministry of Foreign Relations said all three planes had penetrated Cuban airspace earlier in the day.

4.   Cuba insisted the planes had penetrated Cuban airspace, but the Clinton administration disagreed.

5.   Havana says the planes penetrated Cuban airspace.

6.   He also said the planes penetrated Iraqi airspace in the south, but reported no incidents there.

7.   On Thursday, the U.S. Federal Aviation Administration threatened stern action against any American civilian pilot who penetrates Cuban airspace during the memorial.

8.   The Clinton administration says it will take stern action against any American civilian pilot who penetrates Cuban airspace during a memorial service Saturday.

9.   Washington says it will take stern action against any American civilian pilot who penetrates Cuban airspace Saturday.

10.   It was not clear if Dostam aircraft flying from his northern Shebharghan airbase had penetrated Kabul airspace to attack Maranjan.