Question: Babb Airport (FAA LID: 49S) is a public use airport in Glacier County, Montana, United States, it is owned by which Indian reservation and headquarters for the Siksikaitsitapi people in the United States, located in Montana?
Sentence (from "Blackfeet Nation"): The reservation contains 3000 sqmi , twice the size of the national park and larger than the state of Delaware.
Relevant evidence: No