federal government is that they rarely own up to anything unless they have been caught. >> they certainly did in this case. danny, just so people know the clerical error here was that the person, the fbi sort of runs the background check program and the person who was doing the background check on dylann roof in that three-day waiting period did not find that he had been convicted of a drug offense in the county which he's within. mistakes do happen but what can spur change? >> people are always surprised when something like this happens. the reality is law enforcement is vulcanized by design. they are separated by many different agencies. and just if you wondered how this can happen pick up the phone, call mark geragos, call any defense attorney and ask him has a clerical error, a semicolon in the wrong place by a judge, a court, law enforcement agency or prison ever caused havoc for your clients or their families and