Original sentence: " Media reports quoted a police source who said that "everyone was flabbergasted by her decision to wear the vest, especially when she was guarded by three police officers" — in apparent contradiction of Harman's own claims that it was as a courtesy to the police that she wore the jacket
Edited sentence: " Media reports quoted a police source who said that "everyone was flabbergasted by her decision to wear the vest, especially when she was accompanied by three police officers" — in  contradiction of Harman's own claims that it was as a courtesy to the police that she wore the jacket