This is true. A friend who was military pilot at the time told us this a few weeks after 9/11. His version was the first pilot would try to eject right before impact. If that failed the second pilot agreed to just ram United 93.
My friend tragically died in a training accident not long after 9/11. Their planes collided over the pacific. No mayday or “oh $h** comment. Neither pilot saw it coming.
That’s terrible. My son was one of the few surviving crew members of those two Navy planes that collided over the Pacific in 1991. He had given up his slot to somebody who needed the flying hours.