In Washington Tuesday the annual emancipation day parade went off safely, with a visibly strong police presence.
Trash cans were tipped over and secured.
Big issues like gun control are out of the spotlight in the wake of Monday's Boston Marathon bombing.
President Obama sent a message of solidarity and defiance.
"If you want to know who we are, what America is, how we respond to evil: that's it. Selflessly, compassionately, unafraid," he said of the bystanders and first responders who rushed to aid victims.
The president's national security team says there is no evidence of a broader plot beyond yesterday's attack.
U.S. Intelligence did not detect the terror planning, says New York Congressmen Peter King, who sits on the House Intelligence and Homeland Security Committees.
He got an intelligence briefing last week.
"There was no evidence of this at all, no intelligence that seemed to be out there," King said.
Still, the top Senate Republican was critical.
"I think it's safe to say that for many the complacency that prevailed prior to September 11th has actually returned," said Senator Mitch McConnell.
Today nervousness returned, with false alarms at La Guardia, Boston, and Cleveland's airports due to suspicious packages.