Association secretary, Rose Hackett, forwarded UFO reports to Brown after he "left" NICAP and Townsend had Linda pull out the ones that observers described as moving like a falling leaf. Those, he told her, would be "ours."
What do the facts on the ground tell us? The U2 spy plane was flying then. From Wiki:
https://en.wikipedia.org/wiki/Lockheed_U-2The Lockheed U-2, nicknamed "Dragon Lady", is an American single-jet engine, high altitude reconnaissance aircraft operated by the United States Air Force (USAF) and previously flown by the Central Intelligence Agency (CIA). It provides day and night, high-altitude (70,000 feet, 21,300 meters), all-weather intelligence gathering.
Because they traveled so high and fast, the planes needed an exceptionally long descent in order to land, one that took them across the entire continental United States. The design of the plane made it unstable at lower altitudes, causing at least three accidents during the test flight program. giving rise to the U2 pilots' maxim "You' have to fight the dragon if you want to dance with the lady."
Were these planes the 'ours' that Townsend had in mind? As far as I know, he never exhibited any interest in UFOs after this period of time, but the lore surrounding him is that he was involved in the reverse engineering of crashed UFO's. That subject is better addressed in a different post