51.   Gray said two circumstances might have prevented the attack.

52.   Future terrorist attacks might be prevented by increasing restrictions to obtain a Social Security number, members of the Ways and Means Social Security subcommittee were told.

53.   Given the exigencies, law enforcement needs additional tools to prevent terrorist attacks.

54.   He has to use every means, and appear to use every means, to prevent attacks on Israelis.

55.   He said that chlorine washes would kill many pathogens, but he emphasized that the best safety measures are aimed at preventing an attack.

56.   He said the government must now work not only on preventing an attack but also on educating people on the facts about dirty bombs.

57.   Hill said federal authorities would continue to monitor the situation to prevent attacks on witnesses.

58.   How could future attacks be prevented?

59.   If that is achieved, as expected, Christopher will spend his time trying to win agreement on a longer-range proposal to prevent future attacks, the official added.

60.   In a hearing last week, Mueller told Leahy that nothing in the memorandum would have enabled bureau to prevent the attacks.