When five-month old Sebastian stopped breathing on a highway in the US state of Florida on Thursday, his desperate aunt pulled over and screamed for help.
Luckily, Pamela Rauseo, 37, was met on the side of the road by a police officer and two fire-fighters who happened to be stuck in the same traffic jam.
Just behind Ms Rauseo's car was the award-winning photojournalist Al Diaz - who expertly captured the incredible scene.
Mr Diaz snapped away as Sebastian, who suffers from respiratory problems after his premature birth, was already turning blue.
He told the Miami Herald, the newspaper which he works for, that he heard Ms Rauseo say: "the baby can't breathe."