I was serving in Germany at the time. Instead iof living in post quarters, I lived with my family "on the economyu"..that is a term for living in the
German town near the post.
I came home from work, and took the elevator up to the 4th floor, where we resided (only non-German family in the building).
I had just stepped off the elevator, when a teenage neighbor girl named Inga, gave me the news...our president has been shot and killed.
She was speaking rapidly in German, so it took a moment for me to mentally unravel the message. Almost from day one, I had a chief suspect
in mind, and finally somebody has addressed it.
https://www.amazon.com/Man-Who-Killed-Kennedy-Against/dp/1626363137