Responding to post on another thread.
The interview was conducted on April 2, 2012 -- over a month later. Why assume he hallucinated when we could assume he misremembered? By that time, everyone had heard the NEN call where GZ said TM was wearing the button. Why was the photo button specifically mentioned in that very brief interview summary? For all we know, Gilbreath reminded Ayala of the button, and Ayala said the gunshot wound must have been under it. What does "under a photo button" mean, anyway? Lower than the button, or covered by the button? I don't have much faith in an interview summary that doesn't make that clear.
I don't put much confidence in any of those interview summaries. I grant that this one might be in error for some reason.
For the button to be covering the wound, it would have to have been pinned to the shirt after the gunshot. Who would do that, and why?
If that were true, it would be remarkable. I think there would have been some mention of it by now.
If the wound were covered by the button, Ayala wouldn't have seen it without removing the button. Conceivable that he wouldn't mention that, but not likely.
In some contexts, 'under the button' could mean covered by it. In this context, I think it clearly doesn't.
If Ayala didn't see a button, I think he would just say so.