Lt Sedaker is listed as 217th USN pilot to fly a jet plane. This on 4 Nov 1947 at Quonset Point NAS, RI. See the online Mar 1963 issue of Naval Aviation News here:
https://www.history.navy.mil/content.../pdf/mar63.pdf (scroll to p. 14).
His stay at the Naval War College was around 1963-64. He wrote a paper "
Is Our Tide Ebbing in Japan?" (1964).
Regards,
Leendert