Throwing this out there to keep an eye on it.
http://www.bbc.co.uk/news/24153252
http://www.bbc.co.uk/news/24153252
One of the first teams of heavily armed police to respond to Monday's shooting in Washington DC was ordered to stand down by superiors, the BBC can reveal.
A tactical response team of the Capitol Police, a force that guards the US Capitol complex, was told to leave the scene by a supervisor instead of aiding municipal officers.
The Capitol Police department said senior officials were investigating.
...
Multiple sources in the Capitol Police department have told the BBC that its highly trained and heavily armed four-man Containment and Emergency Response Team (Cert) was near the Navy Yard when the initial report of an active shooter came in about 8:20 local time.
The officers, wearing full tactical gear and armed with HK-416 assault weapons, arrived outside Building 197 a few minutes later, an official with knowledge of the incident told the BBC.