Eyewitness accounts from survivors of Azerbaijan Airlines Flight J2-8243, which crashed in Kazakhstan, reveal terrifying details of the disaster, including loud bangs and a loss of cabin pressure. Passengers feared the plane would fall apart.

Two U.S. military officials tell NBC News the U.S. has intelligence indicating that the Russians may have misidentified the Azerbaijan Airlines flight that went down earlier this week, and shot it down with an air defense system.