

Hours earlier, he was a happy 4-year-old who loved Ironman and the Hulk and all the Avengers. Now, as Bryson Mees-Hernandez approached death in a Houston hospital room, his brain swelling through the bullet hole in his face, his mother assured the boy it was OK to die.

"When you are on the other side," his mother, Crystal Mees, recalls telling him, "you are going to see Mommy cry a lot. It's not because she's mad. It's because she misses you."

And this: "It's not your fault."

But whose fault was it?