A fairly liberal media source, but lots of info on this possible attack.  We all need to be very vigilent on 9/11 since we really have no idea what is going to happen or even if the feds know of every attempt that is planned.  Be safe everyone and be careful!

WASHINGTON — Al-Qaida may have sent American terrorists or men carrying U.S. travel documents to launch an attack on Washington or New York to coincide with memorials marking the 10th anniversary of 9/11, government officials say.

One U.S. official says al-Qaida dispatched three men, at least two of whom could be U.S. citizens, to detonate a car bomb in one of the cities. Should that mission prove impossible, the attackers have been told to simply cause as much destruction as they can.

Word that al-Qaida had ordered the mission reached U.S. officials midweek. A CIA informant who has proved reliable in the past approached intelligence officials overseas to say that the men had been ordered by newly minted al-Qaida leader Ayman al Zawahri to mark the 10th anniversary of the 9/11 attacks Sunday by doing harm on U.S. soil.

The tipster says the would-be attackers are of Arab descent and may speak Arabic as well as English. Counterterrorism officials were looking for certain names associated with the threat, but it was unclear whether the names were real or fake.

Counterterrorism officials have been working around the clock to determine whether the threat is accurate, but so far, have been unable to corroborate it, the officials said, speaking on condition of anonymity to discuss the investigation.

In the meantime, extra security was put in place to protect the people in the two cities that took the brunt of the jetliner attacks that killed nearly 3,000 people at the World Trade Center and the Pentagon a decade ago. It was the worst terror assault in the nation's history, and al-Qaida has long dreamed of striking again to mark the anniversary. But it could be weeks before the intelligence community can say whether this particular threat is real.

Undaunted by talk of a new terror threat, New Yorkers and Washingtonians wove among police armed with assault rifles and waited with varying degrees of patience at security checkpoints Friday.

Security worker Eric Martinez wore a pin depicting the twin towers on his lapel as he headed to work in lower Manhattan where he also worked 10 years ago when the towers came down. "If you're going to be afraid, you're just going to stay home," he said.

Mayor Michael Bloomberg, too, made a point of taking the subway to City Hall.

read more here:  http://www.huffingtonpost.com/2011/09/10/911-anniversary-terror-thr...