I submitted for SNA under the URLO ISPP this cycle and am still PATIENTLY waiting for results. We shall see how favorable the selection is! My First Flag was CNETC, a 3*, so I just got in contact with his secretary and he had him sign my endorsement. Mr. Celestine must have been misinformed as who or what rank a Commodore for a wing is, but the PA 100F clearly states that your package must be endorsed by the First Flag in your CO's Chain of Command (O-7+), but even so, others in between probably want to screen your package as well. I worked at NATTC, and before CNETC signed my endorsement, CNATT CO (O-6, my CO's (O-6) boss) still reviewed my package before also providing a memo of endorsement. It wasn't required, but done as a courtesy as this was the first URLO ISPP package my command was submitting.