Lara Logan discusses never-before-seen "Black Hawk Down" mission footage

"60 Minutes" correspondent Lara Logan reports on never-before-seen footage of the "Black Hawk Down," a U.S. Special Forces mission that ended in tragedy as two helicopters were shot down over the Somali capital. Then, Logan talks to the "CBS This Morning" co-hosts about the 20th anniversary of the battle in Mogadishu.