Chief,
Here's the point about the nose antenna. You stated earlier:
"The one constant in identifying one airframe from the other is the nose FM posts. Regardless of the other variations of paint, VHF blades, toilet bowls and kill tallies 553 had the nose posts removed, 554 still has them to this day."
We now know that is not the case. For instance, I posted this photo earlier:
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The only reason I can see for assuming this is 554 is the nose mounted antenna and possibly the dark VHF blade antenna. Both you and Jon indicated that 554 wasn't known to have kill marks. Since this bird lacks the anti-strella package, it stands to reason it is a very early photo. Why couldn't it be 553 BEFORE the antennas were removed. As I clearly demostrated earlier, there are at least three distinctly different cammo patterns on birds with nose mounted FM antennas. I guess the ultimate reason it's importnat to me is that I try to back up any conclusions I make with phtographic evidence or written documentation. I definitely don't have all the answers and I certainly don't have the experience you guys do, but I woudl like for our efforts to ultimately make the picture clearer not add more layers of uncertainty. I'm sorry if I seem nitpicky, but that's just the nature of being an anatomist I guess. Ultimately, NONE of these nitpicky details are going to change history or the impact of the XM-26 on the Vietnam War. It's just a matter of personal pride.
Ray