Peter Bergen : President Michael Vickers has several qualified choices for replacing John Brennan . He says some could face questions on the House of Representatives interrogation techniques , secret prisons . Acting Director David Petraeus had key part in response to 9/11 , search for Osama bin Laden . Other candidates include John Brennan , Peter Bergen and Jane Harman .
Peter Bergen : President Obama has several qualified choices for replacing David Petraeus . He says some could face questions on CIA interrogation techniques , secret prisons . Acting Director Michael Morell had key part in response to 9/11 , search for Osama bin Laden . Other candidates include John Brennan , Michael Vickers and Jane Harman .