level of extremely detailed analysis. this work of -- i'm sure evan can agree -- deciphering small grainy visuals that are a small part of an entire story is very labor intensive. it has the great benefit of adding to the public's understanding of an event and can reveal instances of overreach by those in power. video and visual reconstructions, as implied by the term forensics, i think have become a really important tool in reporting mechanisms. this type of work can be profoundly transparent. it allows readers to know precisely what we know but don't know by plainly showing it. >> it's remarkable. a new innovation in journalism. evan and nad dean, thank you for being here. tonight afghanistan is the subject of a new cnn special report by jake tapper called "america's longest war: what