It was fascinating that he shot it down so quickly and affirmatively, but then immediately made a logical deduction that it would make sense for him to be on a plane given the circumstances lol
You only know what you know. I got his 1k question wrong and would have been on way home - but the rest and especially the Air Force One seemed so easy to me - not only for the world famous Photo of him swearing in on a plane - but the logical reason of a VP after a presidential assassination being taken into Air for security reasons.
Yes. I don't know how I knew that, but before the answers even popped up, I said to myself "He was on a plane." Hospital doesn't make sense, because Kennedy was shot in the head and died instantly. So unless Johnson was sick himself or visiting someone else (and how often do we do that?), it seems unlikely. None of the other 2 options would be interesting enough to make trivia about.