Jason was the leader of a team of students excavating the tomb of the last Queen of Tiwanaku. He was killed by the unknown entity.
Sometime before the events of Tomb Raider: Legend, Jason and a team of students went on an expedition to find the Queen of Twanaku's tomb. The team consisted of: himself, Sarah, Oscar, Lara Croft, Amanda Evert, Anaya Imanu, Eva and Kent. The team unwittingly disturbed the entity, which proceeded to slaughter everyone, (excluding Lara, Amanda and Anaya), including Jason.