21.   Pairs of Russian jets roared over the city.

22.   Planes roared over Belgrade late Wednesday and early Thursday and the rattle of heavy anti-aircraft fire resounded in the capital soon after air raid sirens sounded.

23.   Planes roared over Belgrade late Wednesday and early Thursday, and the rattle of heavy anti-aircraft fire resounded in the capital soon after air raid sirens sounded.

24.   A military jet roared over the capital as the Russian deadline passed.

25.   A single military jet roared over Grozny as the Russian deadline passed.

26.   A Russian military jet roared over the Chechen capital, Grozny, on Tuesday afternoon.

27.   A single military jet roared over Grozny as a Russian ultimatum expired.

28.   A single military jet roared over the capital as the Russian deadline passed.

29.   After midnight, warplanes roared over the city and explosions rocked the area of Lukavica, southwest of Sarajevo, which has been a frequent target of NATO airstrikes.

30.   About an hour after he left, NATO jets roared over the city and several loud detonations boomed from two suburbs.