21.   Bombings are a rarity among the workplace violence records.

22.   Both groups said the bombings were reprisals for Israeli actions, including an explosion last week in Gaza that killed a Hamas leader.

23.   Bombings are among the most difficult cases to solve, because the explosion can obliterate evidence and the bomber can be far away when the device goes off.

24.   Bombings are nothing new to Londoners.

25.   Bombings were also anticipated and routine.

26.   A few embassy bombings were not enough to show us what we had created.

27.   A year later, when the bombing of London was under way, delivery drivers were careering around the city at night.

28.   Albright said the bombings were not a random event.

29.   But bombings are not an option.

30.   But detectives said they had no evidence that either bombing was the work of a militia group.