Tight security will surround weekend ceremonies honoring victims of 9/11.
At The Pentagon Friday an official ceremony marked the 10th anniversary of the September 11th attacks, honoring those lost and those who lived through that terrible day.
"It seems like such a short time and it seems like such a long time all at once," said Pentagon Director of Administration and Management Michael Rhodes.
Defense Secretary Leon Panetta voiced the feelings of those in The Pentagon, then and now.
"They wanted to weaken us - but instead they strengthened America. They unified us. Nobody - nobody attacks this country and gets away with it," he said.
The damage was quickly repaired, but the day is memorialized both inside and outside of the Pentagon, which is still working to wind down the two wars that followed 9/11.
Stepped-up security has become a constant companion, and a new report that terrorists may be planning an anniversary attack provide a chilling reminder that the threat hasn't gone away.
Workers at the Pentagon put their lasting mark on a memorial for future generations, adding stitches to the the National 9/11 flag, left in tatters near New York's Ground Zero and stitched back together as it has toured the nation.
A fitting metaphor, ten years later.