Thayer was a man aboard the Black Rock. He was the first crew member to abandon their post. Another crew member had mentioned earlier that Thayer had been exhibiting something of a mutinous spirit. After complaining for days of headaches and hallucinations, the doctor aboard the ship came to the conclusion their must have been some kind of disease effecting his brain. He was actually suffering from time flashes, much like Minkowski had been aboard the Kahana. He presumably had been flashing back to a time when he was ten years old and had been asking his mother for sweets.
Thayer was the likely to be the first person on the Black Rock to suffer from time flashes.