This may be true historically as well going back to 1963 at least. Keep in mind however, that there is also some deception going on regarding some of these "assassinations" that are being used for exposure. If the target knows its coming, then it may be the body doubles getting taken out, but that cannot be revealed if the intent is to eliminate or flip those involved in the assassination operation later (it is not treason to kill a body-double POTUS, only the real one). One Example is Reagan: He had a miraculous recovery from such a near death experience. I suspect it was successful attempt, but it was a body double that died. He had to know it was coming, and likely took precautions.
This may be true historically as well going back to 1963 at least. Keep in mind however, that there is also some deception going on regarding some of these "assassinations" that are being used for exposure. If the target knows its coming, then it may be the body doubles getting taken out, but that cannot be revealed if the intent is to eliminate or flip those involved in the assassination operation later (it is not treason to kill a body-double POTUS, only the real one). One Example is Reagan: He had a miraculous recovery from such a near death experience. I suspect it was successful attempt, but it was a body double that died. He had to know it was coming, and likely took precautions.