I think that since no one can identify the murderer, he is obv a sniper from another country. The ‘messages’ on the barrel are just to distract from the truth.
He will never be caught.
You are correct.
What is going to happen is that the FBI will frame some idiot and then announce that he was either killed resisting or committed suicide and the Public will swallow the story just as they swallowed the Covid 19 lies.