FBI: 9/11 hijackers cased airports, took test runs
http://www.usatoday.com/news/sept11/2002/05/28/hijackers-test-runs.htm
BBC: London bombers staged 'dummy run'
Newly released CCTV footage shows the 7 July London bombers staged a practice run nine days before the attackDetectives reconstructed the bombers' movements after studying thousands of hours of film as part of the probe into the blasts which killed 52 people.
CCTV images show three of the bombers entering Luton station, before travelling to King's Cross station where they are also pictured.
Officers are keen to find out if the men met anyone else on the day.
Intensive probe
The three, Mohammad Sidique Khan, Shehzad Tanweer and Germaine Lindsay, were conducting a carefully planned reconnaissance exercise, police said.Deputy Assistant Commissioner Peter Clarke, head of Scotland Yard's Anti-Terrorist Branch, said: "What we want to know is where else they went and did they meet anybody else while they were in London?
"If any member of the public thinks that they know something about the movement of these men on that day, they should call us on the anti-terrorist hotline."
He added that it was "part of a terrorist's methodology" to check timings, lay-out and security precautions