Britain terror attack

A armed soldier stands guard at the gate of Royal Artillery Barracks near the scene of a terror attack in Woolwich, southeast London, Thursday, May 23, 2013. Police remained at the scene throughout the night after a brutal attack in a London street Wednesday, which left one member of the armed forces dead and two injured, and the two attackers were also hospitalised. The British government Cabinet's emergency committee immediately called a meeting and Prime Minister David Cameron's office said security was stepped up at barracks across London. (AP Photo/Sang Tan)

An armed soldier stands guard at the gate of the Royal Artillery Barracks near the scene of a terror attack in Woolwich, southeast London, Thursday, May 23, 2013. Police remained at the scene throughout the night after a brutal attack in a London street Wednesday, which left one member of the armed forces dead and two injured, and the two attackers were also hospitalised. The British government Cabinet's emergency committee immediately called a meeting and Prime Minister David Cameron's office said security was stepped up at barracks across London. (AP Photo/Sang Tan)

A woman blows a kiss as she lays a floral tribute in memory of the victim outside the Royal Artillery Barracks near the scene of a terror attack in Woolwich, southeast London, Thursday, May 23, 2013. A member of armed forces was attacked and killed by two men on Wednesday. (AP Photo/Sang Tan)

People heckle the Mayor of London, Boris Johnson, not pictured, as he leave the scene of a terror attack in Woolwich, southeast London, Thursday, May 23, 2013. A member of armed forces was attacked and killed by two men in the area on Wednesday. (AP Photo/Sang Tan)

Media gather at the scene of a terror attack in Woolwich, southeast London, Thursday, May 23, 2013. A member of armed forces was attacked and killed by two men on Wednesday. (AP Photo/Sang Tan)

Police officers gather with crowds of media and the public at the town center near the scene of a terror attack in Woolwich, southeast London, Thursday, May 23, 2013. A member of the armed forces was attacked and killed by two men on Wednesday. (AP Photo/Sang Tan)