This past week, President Donald Trump fired FBI Director James Comey. On this week's "60 Minutes" we look back on Scott Pelley's interview with the director from 2014. Personal letters seized in the raid that killed Osama bin Laden reveal that the al Qaeda leader's son may want to avenge his death. Holly Williams learns more from the FBI agent that lead the investigation of al Qaeda after the 9/11 attacks. Plus -- are you curious about life on other planets? That is what the Mars rover "Curiosity" is trying to find out. Bill Whitaker has this out of this world report.
