A bulletin obtained by ABC News raised concerns that extremists may try to infiltrate security in Washington by posing as law enforcement officials, state capitols also prepare for potential attacks. WATCH the ABC News Live Stream Here: https://www.youtube.com/watch?v=w_Ma8oQLmSM SUBSCRIBE to ABC NEWS: https://bit.ly/2vZb6yP Watch More on http://abcnews.go.com/ LIKE ABC News on FACEBOOK https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc #ABCNLUpdate #Inauguration #Capitol #Security #Washington