Operation Kratos referred to tactics developed by London 's Metropolitan Police Service for dealing with suspected suicide bombers , most notably firing shots to the head without warning . The tactics were developed shortly after the 11 September 2001 attacks , based in part on consultation with Israeli and Sri Lankan law enforcement agencies on how to deal with suicide bombers . Little was revealed about these tactics until after the mistaken shooting of Jean Charles de Menezes on 22 July 2005 , in the wake of the 7 July 2005 London bombings . The term is no longer used by the Metropolitan Police , although similar tactics remain in force
7 July 2005 London bombings
7 July 2005 London bombings
Operation Kratos