Enclave J-12 is an orphanage located near Christopher's Landing, Titan. It is one of many such facilities operated by the Federation Children's Administration, charged with caring for children of deceased Starfleet officers. Timothy Sinclair was one of many orphans raised there. (Star Trek: Pendragon) A labyrinth of more than fifty sub-levels was constructed beneath the Enclave's surface campus. These sub-levels contained medical facilities, habitat wards, research and scientific laboratories, and special projects.