Bryan Kohberger trial: Is the knife sheath a smoking gun?

In the upcoming Bryan Kohberger trial, the so-called “smoking gun” may be DNA found on a knife sheath next to one victim’s body. Though the defense is trying to discredit it, prosecutors say it’s key. Kohberger’s homes in Washington and Pennsylvania were searched, revealing items including black clothes, gloves and criminology books — none definitive alone, but telling when combined. NewsNation’s Brian Entin spoke with top experts about what it all means.