incorrect flight. they then notified the pilot. as part of the airline security procedure, they decided to return to the airport in los angeles. the airline is still trying to figure out exactly what went wrong here. we can note that united airlines and al nippon airlines have a partnership, a cancer-chair. perhaps that has something to do with it. but we don t have solid answers on what happened here. you can hear the collective groan. how do you get on the wrong flight? you are checked so many times. you scan your boarding pass before you get on as well. human error is always there. renee, thanks so much. coming up, russia is offering a mediator to the u.s. how generous. it s all pop-culture trivia, but it gets pretty intense.