Obama delivered the "thanks of the American people" to the members of the military at the service members' ball.

CNN: Obamas party with 30,000 close friends

"As the commissioner has made clear, the Met wants to be the best police service, " Ms Ball said.

BBC: Met Police needs to 'up its game' on victim support

Tony Ball, spokesman for the Secret Service, said the dog that alerted security officers to a suspicious car on the White House grounds Thursday morning was trained to detect bombs only.

CNN: Canines patrol grounds daily

But normal service was soon resumed as Glasgow counter-attacked from turnover ball and Thom Evans raced away down the left wing for his second try, brushing off a powder-puff tackle from Jon Davies.

BBC: Scarlets 21-38 Glasgow

Hadrian Ball, medical director of the Norfolk and Suffolk NHS Foundation Trust, said the service was being continually monitored.

BBC: Suicidal woman 'told to have a cup of tea' by NHS helpline

Secret Service dogs make routine runs on White House grounds throughout the day, every day, Ball said.

CNN: Canines patrol grounds daily

Deputy Assistant Commissioner Helen Ball said the force launched its Total Victim Care strategy in April 2012 with a renewed focus on improving the service victims of crime receive.

BBC: Met Police needs to 'up its game' on victim support