The Drills of 7-7 on 7-7 in London

On the morning of 7-7 in London, there was a simultaneous exercise targeting the exact same trains and buses. There was also an anti-terrorist drill going on 7-7. Just like 9-11, they were talking about attacks on the same targets,. The same kind of tube stations, and exactly the same time as the actual attack happened. It's important to note that those taking part in the drills need not know they're part of a larger operation.