As millions across the country are commemorating the anniversary of 9/11, the Obama administration reiterated that it's taking all threats against the U.S. seriously.
Officials say the possible threat is directly toward Washington, D.C. or New York City.
But around Union Station in the District, life appears to be going on as usual. Residents and tourists are using Amtrak trains and Metro as if it were any other day. The travelers say they can't let fear run their lives.
Officials have increased security presence across the region. More than five bomb-sniffing dogs could be seen walking throughout the station, and dozens of heavily armed police are also patrolling the area.
More squad cars are parked at the outside station as well, making their presence very obvious.