Enclave fan, not even knowing their origins...
Serious, learn lore, then discuss. : D
Enclave from Fo3 are survivors from Oil Rig, who used Vertibirds to escape during Chosen One's sabotage, there is no one guy from other place.
Fallout 3 Official Guide
His father was the high-ranking Enclave scientist on orders from the president to move all high-ranking officials to the only other secure Enclave location with a functioning ZAX super-computer, Raven Rock. Colonel Autumn has proven to be far less subservient than his scientist father, often openly disagreeing with the president's decisions.