When does life end? A father didn’t believe his daughter was dead. The hospital still harvested her organs

After Brittany O'Connor was declared brain dead, her father clashed with medical authorities. The battle shines a light on America's legal definition of death - and the thousands waiting for organ donation

Mike O'Connor had just been told that his daughter was brain dead.

Brittany had been in the hospital for six days. One end of a thick blue tube was taped to her mouth, the other connected to a respirator, which pushed air into her lungs with a mechanical force that shook her chest up and down.