“Crap. They didn’t see him walk off base...???”
They weren’t eyewitnesses to his leaving. We don’t know why he left.
He could have been a deserter. Drunk. Looking for fun. Up to no good. Exploring. Cracked. On a mission. Making a mistake of some kind. Kidnapped. Tricked.
I don’t know. And no one saw him go.
So be it....
You are actually writing and talking like the WH press secretary.....