AN INADEQUATE CONCLUSION AT HEATHROW

One would have thought that suggesting there was a bomb and assaulting a security officer in the vicinity of the threat at Heathrow, would have been enough for an intending passenger to be arrested on suspicion and eventually charged with appropriate offence(s). In the case of the son of a world famous singer he was, unlike many who have committed similar offences, cautioned by police.  This was a disgraceful dereliction of duty by the police.  The officers involved and any superiors who agreed the caution should be charged with misconduct.  

How can police who often are under great pressures hope to command public respect with their becoming judge and jury and coming to such an inadequate conclusion?