personal injury or death; either caused by a member of the Army National Guard or the Air National Guard, as the case may be, while engaged in training or duty under section 316, 502, 503, 504, or 505 of this title or any other provision of law for which he is entitled to pay under
section 206 of title 37, or for which he has waived that pay, and acting within the scope of his employment; or otherwise incident to noncombat activities of the Army National Guard or the Air National Guard, as the case may be, under one of those sections.