what is not at issue , however , is that prompt and decisive action on the part of metropolitan police firearms officers , under the direction of the command and control centre here at new scotland yard , has averted a terrorist attack on one of london 's iconic districts an attack which , had it proved successful , might have blighted the london olympiad in the same way that the suicide bombers of 7/7 succeeded in blighting london 's elation at having been awarded the games , just the day before .