It seems to me that some pretty big assumptions have been made...so I will give you my justification for what I said:
The 509th does rank as one of the most famous wings in the Air Force. During WWII, the Army Air Forces formed the group with only one mission in mind: to drop the first atomic bomb in history. Gen. Paul Tibbets headed the group and flew the B-29, The Enola Gay, in August 1945, completing the mission that many feel brought a quick end to World War II. In October the group returned to Roswell Army Air Field.
Many historians regard the 509th Bomb Group as the foundation on which the Strategic Air Command was built. So yes, the 509th was probably the most elite (and secret) military unit in existence at that time. As for being in a small, back-water base, Roswell was specifically chosen to be the home of the 509th because it was remote, thus able to maintain the extremely high level of secrecy required…hardly a small back-water air base.
Am I impressed? Well I don't think that was my original point, but the pilots, flight crews and officers, including Major Jesse Marcel Sr., were among the most elite and best trained in the military. Major Marcel was not just “an” intelligence officer; he was the base intelligence officer for the 509th. He was highly trained and exceptionally skilled. To state that he “likely could just have easily been in charge of laundry” is totally inaccurate. His knowledge and skills were such that he was chosen to work on other highly secret projects including the famous Bikini atoll atomic tests, among others.
I think there's a lot of assumptions on both sides, and in your same generous spirit, I'll give you my justifications. The 509 might have been one of the most famous wings, as you say, but famous isn't the same as elite. Its fame as you point was for dropping the only 2 atomic bombs dropped in warfare. It didn't build the bomb, just dropped it--A very good feat in itself, but not one likely to be known to an alien spying in the Roswell area. Except for loading and dropping the bombs, the 509 crews in 1947 had no connection with making or testing atomic bombs. On the first raid, a Navy commander went with Tibbets' crew to arm the bomb, because none of the 509 knew how.
Moreover, WWII officially ended Sept. 2, 1945, and the US military began winding down the wartime buildup almost immediately. The first to be rotated home and discharged were those who had been in the military the longest and had served overseas; in other words, the most veteran enlisted men, NCOs, and officers--particularly officers: there just wasn't room for that many in peacetime military. Even Jimmy Stewart took a discharge and went home. With so many people being discharged between the end of the war and the Roswell incident on July 7, 1947, I gotta wonder how many real veterans were still with the 509 by then. Were those who were on Tinian when the bomb was loaded and in the air over Japan when it was dropped still with the unit nearly 2 years later? Certainly Tibbets wasn't still in command nor at Roswell. Because of the turnover, I would argue that by the summer of '47 the 509 was not elite nor further advanced in their training than any other bomber wing.
One indication of this is that the 509 participated in the first SAC bombing competition in 1948--and lost to another Air Force unit. (One of their planes did take the Best Crew award, however.) Seems they were good, but not what I'd call elite.
As for the 509 being a "secret" unit in 1947, Roswell was certainly not a secret base, having been built in 1942 to train bomber crews. The only "bombs" dropped in the Roswell area, however, were sacks of flour. To drop real bombs and fire real bullets, the crews had to fly across Texas to practice ranges on islands off the South Texas coast. It's flat as a pancake around Roswell, and the airbase and all those planes in the air would be easily seen. Maybe that's why the secret training of the 509 prior to dropping the bomb was at Wendover Army Air Field in Utah rather than Roswell.
I still don't understand why the Air Force would place its most "elite" bomber unit in a far-off place like Roswell. SAC's purpose was to get the first strike on the enemy if the baloon went up, right? And even by 1947, the military figured if we fought another war, it would be against the Soviet Union. In '47, the main Air Force bomber was still the B-29 Superfortress, with a top speed of 365 mph. Roswell is 794 miles from Los Angeles, which means even an elite bombing wing would take 2 hours or more just to reach the Pacific Ocean on an hours-long mission to bomb Siberia. Does that sound like first-strike capability to you? Flying to the Atlantic would take even longer, but the 509 at Roswell would be in a hell of a good spot for an attack on Mexico.
As for secrets, what secret things was the 509 supposedly doing at Roswell that all the other SAC units weren't doing at other air bases all over the country and in foreign lands? SAC was pretty well advertised from the get-go, with a lot of publicity about its organization and mission. Remember what they said in
Dr. Strangelove--what good does it do to have a deterrent weapon if no one knows about it?
Another thing I don't understand--if the 509 was an elite unit at some secret base in 1947, why is it that just 11 years later it was moved to very urbanized New Hampshire and almost disbanded? Did they really go down that badly in just 11 years?
Of course, if one wants to believe aliens crashed on a mission to Roswell, it helps to have an elite bomber wing at a secret base near there to attract them. Don't quite know how the aliens would know this was the unit whose predecessors dropped atom boms on Japan since no such bombs ever were dropped in New Mexico.
But if I were an alien wanting to scope out earth's latest technology, I sure wouldn't waste my time scouting big, lumbering B-29s in the New Mexican desert. No, I'd go buzz Muroc Army Air Field--what is now Edwards AFB--where in 1947 Chuck Yeager was breaking the sound barrier. Now that was a really elite unit that kept secrets longer than the flyboys at Roswell. That and the folks who were building and testing the intercontinental missiles that later replaced the Air Force base at Roswell. On the other hand, the Roswell rocket unit was infamous for blowing up missiles in their silos. Guess there just never was a truly elite Air Force group at Roswell.
As for the hot-shot intelligence officer that goes along with the story, what kind of training would give even the most intelligent intelligence officer a leg up in identifying alien space ships in 1947? Intelligence officers during WWII and afterward mostly looked at films and photos of camouflaged enemy targets and assessed photos of damage from bomb strikes. They weren't metalurgists and didn't design aircraft. They didn't go chasing Tokyo Rose or aliens or run to crash sites.
But then it sounds better if an "intelligence officer" says he saw wreckage of an alien spaceship than if the officer in charge of the motor pool makes the same claim.
None of it really matters--people who want to believe in Roswell and aliens will do so and nothing anyone says will make them question those beliefs. Belief in aliens and conspiracies is the new religion, embraced as devoutly by followers as any other.