This Almanac was compiled by Amanda Miller, Aaron M.U. Church, and the staff of Air & Space Forces Magazine. We gratefully acknowledge Air Force Public Affairs offices at headquarters, agencies, major commands, and the reserve components for their invaluable help—The Editors.
Four Russian warplanes entered the Air Defense Identification Zone off the coast of Alaska on Dec. 18, North American Aerospace Defense Command announced—the first such incident in three months.