got. >> cia director leon panetta saying today that there were multiple sources of intelligence that ultimately beat the path to osama bin laden. at this point and maybe forever after, it is hard to know exactly where the key information came from that led to him. that has not stopped people of competing idealogical stripes from using this week's news to support their own arguments that their way was the way that public enemy number one was brought to justice. people saying torture worked. or torture didn't work at all. while i am sympathetic to those arguments and have them all the time, how could anybody really know the connection of those arguments to the facts at this point? malcolm nance is a former master instructor and chief of instructor at the navy sears school. he has testified in front of congress that wart boarding is torture. he's experienced it himself. he's a consultant on counterterrorism and terrorism intelligence for the u.s. government. he's an author of a book.