21.  Back then, he and other students at Brandon-Morris Elementary School huddled under their desks during nuclear attack drills, and parents talked nervously of impending integration.

22.  At the time, Bush advocated the deployment of a missile defense shield as a protection against nuclear attack, rather than relying solely on large-scale nuclear retaliation.

23.  Baseball says that it cannot, that no event short of a nuclear attack is worthy of moving the games to the smaller network.

24.  Beneath the flat, broad plains of North Dakota, where the push of a button could have ignited a nuclear attack, the earth is exploding.

25.  -- Reducing the Cold War-era role of FEMA, which formerly had planning for coping with a nuclear attack as a major part of its mission.

26.  A nuclear attack of any sort would be appalling.

27.  A missile defense system operating against a nuclear attack would have to perform well during its first and only mission.

28.  A terrorist nuclear attack at the Summer Olympics.

29.  A training tape simulating a massive Soviet nuclear attack was accidentally run on the computers of the North American Aerospace Defense Command.

30.  After the Cold War, in a first, the Navy agreed to let civilian scientists regularly use its fleet of nuclear attack submarines to study the Arctic.