Byrd was lying. When he shot Ashli, videos showed that he was standing just outside a window of the anteroom from which Ashli was leaving. The notion that he did not glance into that window is laughable. He knew that there were not hundreds of people in the anteroom. Photos show that the hall he was in was mostly empty. He was not trapped.
Nevertheless, Byrd boasted, "I know that day I saved countless lives."
Byrd now knows that all the protesters, not just Ashli, were unarmed. He knows from the recent FBI report that there was no insurrection. Therefore, he knows that he almost certainly saved no lives at all.
The MAGA protestors were obviously not there to kill people, or they would have (1) arrived well armed, and (2) killed people.
Byrd was probably lying about having shouted warnings at Ashli. While there was plenty of ambient noise, the videos taken from inside the anteroom did not pick up those supposed warnings on their soundtracks, and apparently no one in the anteroom or in the hall heard them.
For more info about exactly what happened at the scene of Ashli's murder, read this excellent FR post by GJones2:
https://freerepublic.com/focus/news/3987221/posts?page=51#51
Someday, Michael Byrd, I hope you get the trial, conviction, and sentence you so richly deserve. You murdered Ashli Babbitt.
Bkmk