1.  Shots from air defense guns and surface-to-air missiles left the unidentified plane unscathed.

2.  Shots from air defense guns and surface-to-air missiles left the unidentified planes unscathed.

3.  The alarm was the result an unidentified plane flying into vulnerable airspace.

4.  The spot shows a military radar room, with controllers panicking at the sight of unidentified planes.

5.  The system allowed controllers to follow unidentified planes on a wall-sized screen in Mexico City and to scramble interceptor aircraft if the planes entered Mexico.

6.  A NATO military investigation has found no evidence to back reports unidentified planes have been dropping arms to government troops in Bosnia, officials said Wednesday.

7.  A NATO military investigation has found no evidence to support reports that unidentified planes have been airdropping weapons to government troops in Bosnia.

8.  A similar incident occurred Thursday, when two Black Hawk helicopters failed to locate an unidentified twin-engine plane which approached Bogota without authorization.

9.  An unidentified plane briefly violated Russian airspace before returning to Chinese territory, the Russian Defense Ministry said Monday.

10.  An air force helicopter pilot spotted the unidentified plane flying over the town of Kilinochchi on Monday, the official said on condition of anonymity.