21.   According to some notable people, this has the makings of a national crisis.

22.   AIDS had become a national crisis, attributed by some critics to the kind of sexual libertinism associated with Hefner.

23.   But in the last two months, environmentalists have been stymied for fear of appearing unpatriotic or even petty in the face of a national crisis.

24.   But now his words seem prophetic, as Bush is hurled into his role of being commander-in-chief at a time of unprecedented national crisis.

25.   But speaking out during a time of national crisis and when emotions are running high can lead to uncomfortable results.

26.   But White House officials tried to contain the political damage by accusing GOP leaders of creating a national crisis for partisan gain.

27.   Consider this response when a reporter asks a man with slicked-back hair how the state group is weathering the national crisis.

28.   During times of national crisis, entertainment plays a vital function. . . .

29.   Especially in times of national crisis.

30.   Emory University law professor David Garrow noted that the courts have not been eager to stop seemingly unconstitutional infringements on civil liberties in times of national crises.