Pine Ridge Reservation

Pine Ridge Reservation is the setting of the 1960 Assumption book entry, which is a location in South Dakota. It is one of the early assignments of Louis Yero as a linguist for the Department of External Observation's Linguistics and Deniable Communications division.

Louis was sent to investigate a manifestation of the USS Hornet CV-8 from another timeline at the reservation. While there he interviewed that timeline's version of his brother, Ben.