For what it is worth the present 'Threat Level' is SEVERE as defined by the MATRA (multi agency threat & risk agencies). Today sadly would be even a greater risk as the copy cats tend to use aniversarys. Are we not going off the subject a bit. That you describe in respect of the Police is mirrored at LHR, many standing around and lots of carriers usually parked for hours on double yellow lines while PC's lounge in the canteen.