As Princess Anne and Mark Phillips were returning to Buckingham Palace on 20 March 1974, from a charity event on Pall Mall, their Princess IV car was forced to stop on the Mall by a Ford Escort. The driver of the Escort, Ian Ball, jumped out and began firing a pistol. Inspector James Beaton, Anne's personal police officer, responded by getting out of the car in order to shield her and to attempt to disarm Ball. Beaton's firearm, a Walther PPK, jammed, and he was shot by the assailant, as was Anne's chauffeur, Alex Callender, when he tried to disarm Ball. Brian McConnell, a nearby tabloid journalist, also intervened, and was shot in the chest. Ball approached Anne's car and told her of his kidnapping plan, which was to hold her for ransom, the sum given by varying sources as £2 million or £3 million, which he claimed he intended to give to the National Health Service. Ball then directed Anne to get out of the car, to which she replied: "Not bloody likely!", and reportedly briefly considered hitting Ball. Eventually, she exited the other side of the limousine as had her lady-in-waiting, Rowena Brassey. A passing pedestrian, a former boxer named Ron Russell, punched Ball in the back of the head and then led Anne away from the scene. At that point, Police Constable Michael Hills happened upon the situation; he too was shot by Ball, but not before he called for police backup. Detective Constable Peter Edmonds, who had been nearby, answered and gave chase, finally arresting Ball.