Stegosaurus-header-icon "'Ooh, ah,' that's how it always starts. But then later there's running and screaming."

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"Seriously, guys, I'm kind of exposed out here..."

Jack[1] was a mercenary employed by Eli Mills. He was part of the team sent to retrieve a bone from the Indominus rex's skeleton. Using the callsign "Land One," he was charged with opening the gate to the Mosasaurus lagoon so that the team's mini sub could enter it. While he was working alone in the mercenaries' Main Street campsite, he was briefly startled by a Dilophosaurus.

He was stalked by Isla Nublar's resident T. rex while awaiting extraction by helicopter. Due to the noise of the thunderstorm and the rotor blades of the helicopter, he hadn't heard her approaching him, or the yells of his fellow mercenaries in the helicopter shouting at him to run. Upon finally seeing the T. rex, Jack ran. The huge predator chased him down Main Street, before the helicopter dropped a rescue ladder for him.

Although he managed to climb on, the T. rex grabbed the other end in her jaws and pulled, threatening to drag the entire helicopter down. The team leader in the chopper ordered the ladder cut, intending to sacrifice Jack to save the chopper. However, this ended up being unnecessary, as the portion in the dinosaur's mouth broke off, allowing the helicopter to leave. Everyone cheered, but their celebration was short-lived; Jack was seized and eaten alive by the Mosasaurus as the helicopter flew over the lagoon, much to the other mercs' horror.