new terror attacks, the United States is urging heightened vigilance
as Americans observe the first anniversary of September 11, the
White House said Tuesday.
say they have no details outlining an impending attack, they're
taking no chances. White House Press Secretary Ari Fleischer said
Tuesday the threat of new attacks has U.S. officials on a ``higher
sense of guard.''
the FBI told police, utilities, banks and the transportation industry
to be wary. U.S. military bases and diplomatic missions worldwide
also are on high security alert for the week.
In the past
few days, U.S. intelligence agencies have detected what officials
now describe as a marked increase in terrorist ``chatter,'' information
from monitored communications and other sources that are used
as a barometer of the likelihood of potential attacks.