51.   Unprecedented security shrouded his address in the Capitol one week after it was evacuated for the second time because of suspected threats.

52.   U.N. Undersecretary-General for Political Affairs Kieran Prendergast said there was a need for unprecedented security at the United Nations following the attacks.

53.   U.N. Undersecretary-General for Political Affairs Kieran Prendergast said there was a need for unprecedented security following the attacks on the United States.

54.   U.S. officials say the two countries, estranged during the Cold War, are on the verge of unprecedented security and military cooperation.

55.   Unprecedented security measures are being taken inside and outside the courthouse.

56.   Unprecedented security precautions are already being planned.

57.   When mission commander Dominic Gorie and his crew rocket into orbit this week, it will be amid unprecedented security during unprecedented times.

58.   He added that unprecedented security arrangements had been made for the Games.

59.   Indian officials say a poll might be ordered in December under unprecedented security.

60.   A strike called by Moslem separatists to denounce Indian-sponsored general elections crippled the Kashmir Valley Monday, forcing authorities to order unprecedented security measures.