

While the Lone Wanderer is told by the president to infect the water purifier with the F.E.V. If he is actually given him the code, he'll kill the Lone Wanderer, but if denied Autumn will let them go when the president says over the intercom that he wants to talk to the Wanderer. He takes them to the Enclave base of Raven Rock and interrogates them for the G.E.C.K. Much later, Colonel Autumn knocks the Lone Wanderer out with a grenade booby trap in Vault 87 after they retrieve the G.E.C.K., which unlocks the purifier, and are trying to leave. However, Colonel Autumn actually survived by injecting himself with a special anti-radiation vaccine at the last second, unknown to the player and their allies. He corners the Lone Wanderer's father and demands he surrender the purifier to the Enclave, but James overloads the purifier with deadly radiation to stop the Enclave from taking it, killing himself in the process and seemingly killing Autumn as well. Colonel Autumn first appears when the Enclave attack the Jefferson Memorial where the water purifier is.
