The heavily armed P-61 Black Widow was the U.S. Army Air Force's first dedicated night fighter. Equipped with radar, four .50 caliber machine guns and four 20mm. cannons, the Widow was a fearsome adversary. It flew as both an intruder and interceptor in Europe and the Pacific. Originally printed by Northrop in 1945, the YP-61 Pilot's Flight Operating Manual taught pilots everything they needed to know before entering the cockpit. Originally classified "Restricted", the manual was declassified long ago and is here reprinted in book form. This affordable facsimile has been reformatted, and color images appear as black and white. Care has been taken however to preserve the integrity of the text.