They do have body doubles.
If so, how did we get him to lay low and not issue word one since his "alleged" whacking?
Even if they found the actual guy, why would they kill him? I’m sure these guys have ways of capturing people alive when they want to, and this would be a high priority target for that, if ever there was one.
My guess is that, if they got him, he is in the most secret hidey hole our government could arrange, and the rest of the story is a cover to make the enemy think that we didn’t get any intelligence from him.