PART 2
12:15 P.M. EDT
The Immigration and Naturalization Service says U.S. borders with Canada and Mexico are on the highest state of alert, but no decision has been made about closing borders.
12:30 P.M. EDT
The FAA says 50 flights are in U.S. airspace, but none are reporting any problems.
1:04 P.M. EDT
Bush, speaking from Barksdale Air Force Base in Louisiana, says that all appropriate security measures are being taken, including putting the U.S. military on high alert worldwide. He asks for prayers for those killed or wounded in the attacks and says, "Make no mistake, the United States will hunt down and punish those responsible for these cowardly acts."
1:27 P.M. EDT
A state of emergency is declared by the city of Washington.
1:44 P.M. EDT
The Pentagon says five warships and two aircraft carriers will leave the U.S. Naval Station in Norfolk, Virginia, to protect the East Coast from further attack and to reduce the number of ships in port. The two carriers, the USS George Washington and the USS John F. Kennedy, are headed for the New York coast. The other ships headed to sea are frigates and guided missile destroyers capable of shooting down aircraft.
1:48 P.M. EDT
Bush leaves Barksdale Air Force Base aboard Air Force One and flies toan Air Force base in Nebraska.
2:00 P.M. EDT
Senior FBI sources tell CNN they are working on the assumption that the four airplanes that crashed were hijacked as part of a terrorist attack.
2:30 P.M. EDT
The FAA announces there will be no U.S. commercial air traffic until noon EDT Wednesday at the earliest.
2:49 P.M. EDT
At a news conference, Giuliani says that subway and bus service are partially restored in New York City. Asked about the number of people killed, Giuliani says, "I don't think we want to speculate about that -- more than any of us can bear."
3:55 P.M. EDT
Karen Hughes, a White House counselor, says the president is at an undisclosed location, later revealed to be Offutt Air Force Base in Nebraska, and is conducting a National Security Council meeting by phone. Vice President Dick Cheney and National Security Adviser Condoleezza Rice are in a secure facility at the White House. Defense Secretary Donald Rumsfeld is at the Pentagon.
3:55 P.M. EDT
Giuliani now says the number of critically injured in New York City is up to 200 with 2,100 total injuries reported.
4:00 P.M. EDT
CNN National Security Correspondent David Ensor reports that U.S. officials say there are "good indications" that Saudi militant Osama bin Laden, suspected of coordinating the bombings of two U.S. embassies in 1998, is involved in the attacks, based on "new and specific" information developed since the attacks.
4:06 P.M. EDT
California Gov. Gray Davis dispatches urban search-and-rescue teams to New York.
4:10 P.M. EDT
Building 7 of the World Trade Center complex is reported on fire.
4:20 P.M. EDT
U.S. Sen. Bob Graham, D-Florida, chairman of the Senate Intelligence Committee, says he was "not surprised there was an attack (but) was surprised at the specificity." He says he was "shocked at what actually happened -- the extent of it."
4:25 P.M. EDT
The American Stock Exchange, the Nasdaq and the New York Stock Exchange say they will remain closed Wednesday.
4:30 P.M. EDT
The president leaves Offutt Air Force Base in Nebraska aboard Air Force One to return to Washington.
4:45 P.M. EDT
The City of New York announces that 200 firefighters have been killed and 78 police officers are missing.
5:15 P.M. EDT
CNN Military Affairs Correspondent Jamie McIntyre reports fires are still burning in part of the Pentagon. No death figures have been released yet.
5:20 P.M. EDT
The 47-story Building 7 of the World Trade Center complex collapses. The evacuated building is damaged when the twin towers across the street collapse earlier in the day. Other nearby buildings in the area remain ablaze.
5:30 P.M. EDT
CNN Senior White House Correspondent John King reports that U.S. officials say the plane that crashed in Pennsylvania could have been headed for one of three possible targets: Camp David, the White House or the U.S. Capitol building.
6:00 P.M. EDT
Explosions are heard in Kabul, Afghanistan, hours after terrorist attacks targeted financial and military centers in the United States. The attacks occurred at 2:30 a.m. local time. Afghanistan is believed to be where bin Laden, who U.S. officials say is possibly behind Tuesday's deadly attacks, is located. U.S. officials say later that the United States had no involvement in the incident whatsoever. The attack is credited to the Northern Alliance, a group fighting the Taliban in the country's ongoing civil war.
6:10 P.M. EDT
Giuliani urges New Yorkers to stay home Wednesday if they can.
6:40 P.M. EDT
Rumsfeld, the U.S. defense secretary, holds a news conference in the Pentagon, noting the building is operational. "It will be in business tomorrow," he says.
6:54 P.M. EDT
Bush arrives back at the White House aboard Marine One and is scheduled to address the nation at 8:30 p.m. The president earlier landed at Andrews Air Force Base in Maryland with a three-fighter jet escort. CNN's King reports Laura Bush arrived earlier by motorcade from a "secure location."
7:02 P.M. EDT
CNN's Paula Zahn reports the Marriott Hotel near the World Trade Center is on the verge of collapse and says some New York bridges are now open to outbound traffic.
7:17 P.M. EDT
U.S. Attorney General John Ashcroft says the FBI is setting up a Web site for tips on the attacks
7:45 P.M. EDT
The New York Police Department says that at least 78 officers are missing. The city also says that as many as half of the first 400 firefighters on the scene were killed.
8:30 P.M. EDT
President Bush addresses the nation, saying "thousands of lives were suddenly ended by evil" and asks for prayers for the families and friends of Tuesday's victims. "These acts shattered steel, but they cannot dent the steel of American resolve," he says. The president says the U.S. government will make no distinction between the terrorists who committed the acts and those who harbor them. He adds that government offices in Washington are reopening for essential personnel Tuesday night and for all workers Wednesday.
9:22 P.M. EDT
CNN's McIntyre reports the fire at the Pentagon is still burning and is considered contained but not under control.
9:57 P.M. EDT
Giuliani says New York City schools will be closed Wednesday and no more volunteers are needed for Tuesday evening's rescue efforts. He says there is hope that there are still people alive in rubble. He also says that power is out on the west side of Manhattan and that health department tests show there are no airborne chemical agents about which to worry.
10:49 P.M. EDT
CNN Congressional Correspondent Jonathan Karl reports that Attorney General Ashcroft told members of Congress that there were three to five hijackers on each plane armed only with knives.
10:56 P.M. EDT
CNN's Zahn reports that New York City police believe there are people alive in buildings near the World Trade Center.
11:54 P.M. EDT
CNN Washington Bureau Chief Frank Sesno reports that a government official told him there was an open microphone on one of the hijacked planes and that sounds of discussion and "duress" were heard. Sesno also reports a source says law enforcement has "credible" information and leads and is confident about the investigation.
