Boston Police Chief John Abraira resigned after deputies sigh letter of no confidence . ' CNN obtained the letter from a deputy chief who signed it but requested anonymity . ` ` failed to ... show any leadership '' at Boston Marathon bombings , deputy chiefs say . Abraira defended his actions , saying his trusted the command ##os on the phone .
Boston Police Chief John Abraira resigned after deputies sigh letter of no confidence . ' ` ` failed to ... show any leadership '' at Boston Marathon bombings , deputy chiefs say . Abraira defended his actions , saying his trusted the command ##os on the phone .