The 779th Tactical Airlift Squadron is an inactive United States Air Force unit.
 Its last was assigned to the 464th Tactical Airlift Wing, stationed at Pope Air Force Base, North Carolina.
 It was inactivated on 31 August 1971.
 During World War II, the 779th Bombardment Squadron was a B-24 Liberator heavy bomb squadron which saw combat with Fifteenth Air Force stationed in Italy, assigned to the 464th Bombardment Group.
The 736th Bombardment Squadron is an inactive United States Air Force unit.
 It was last assigned to the 454th Bombardment Wing.
 It was last stationed at Columbus Air Force Base, Mississippi, and was inactivated on 2 July 1969.
The 618th Bombardment Squadron was activated in 1943 as one of the four squadrons of the 477th Bombardment Group, the first (and only) bombardment group in the United States Army Air Forces to include black pilots.
 Members of the squadron participated in the Freeman Field Mutiny, protesting racial segregation in the military.
 The squadron was inactivated in 1945 after the 477th became a composite group that included bombardment and fighter squadrons.
The 789th Tactical Fighter Squadron is an inactive United States Air Force unit.
 During World War II, as the 789th Bombardment Squadron it was assigned to the 467th Bombardment Group, and engaged in combat in the European Theater of Operations.
 From May to December 1944, the squadron was detached to the 801st Bombardment Group (Provisional) engaging in Operation Carpetbagger operations.
 After V-E Day, the squadron returned to the United States and transitioned into the Boeing B-29 Superfortress It was inactivated on 4 August 1946 at Clovis Army Air Field, New Mexico in August 1946.
The 74th Bombardment Squadron is an inactive United States Air Force unit.
 It was first active during World War II as the 74th Aero Squadron.
 In 1933 it was consolidated with the 74th Pursuit Squadron, which had been organized as a reserve training organization in 1927, activating in the Panama Canal Zone, where it served during World War II as the 74th Bombardment Squadron.
The 847th Bombardment Squadron is an inactive United States Army Air Forces unit.
 Its last assignment was with the 489th Bombardment Group at Great Bend Army Air Field, Kansas where it was inactivated on 28 March 1945.
 The squadron performed antisubmarine patrols in 1942 and 1943.
 After reforming as a heavy bombardment squadron, it engaged in combat in the European Theater of Operations until returning to the United States in late 1944.
 The squadron was inactivated while its parent group was training as a very heavy bombardment unit.
The 616th Bombardment Squadron was activated in 1943 as one of the four squadrons of the 477th Bombardment Group, the first (and only) bombardment group in the United States Army Air Forces to include black pilots.
 Members of the squadron participated in the Freeman Field Mutiny, protesting racial segregation in the military.
 The squadron was inactivated in 1945 after the 477th became a composite group that included bombardment and fighter squadrons.
Columbus Air Force Base (AFB) (IATA: CBM, ICAO: KCBM, FAA LID: CBM) is a United States Air Force base located approximately 9 mi north of Columbus, Mississippi.
The Sierra Bombardment Group was a provisional United States Army Air Corps organization.
 It was established on 8 December 1941 at Minter Field, California.
 It consisted of air crews and ten B-17E Flying Fortresses formerly assigned to the 7th Bombardment Group 32d Bombardment Squadron and 427th Bombardment Squadron.
 In addition, thirty five B-25 Mitchell medium bombers of the 17th Bombardment Group, Second Air Force, Pendleton Army Airfield, Oregon, were also assigned.
The 789th Tactical Fighter Squadron is an inactive United States Air Force unit.
 During World War II, as the 789th Bombardment Squadron, it was assigned to the 467th Bombardment Group as a Consolidated B-24 Liberator squadron in 1943.
 After training in the United States, it moved to the European Theater of Operations the following year.
 It saw combat until the surrender of Germany in May 1945, earning a French Croix de Guerre with Palm for its actions contributing to the liberation of France.
 From May to December 1944, the squadron was detached to the 801st Bombardment Group (Provisional) engaging in Operation Carpetbagger operations.
 After V-E Day, the squadron returned to the United States and transitioned into the Boeing B-29 Superfortress It was inactivated on 4 August 1946 at Clovis Army Air Field, New Mexico in August 1946.

Question: How many miles north of Columbus, Mississippi is the base where the 736th Bombardment Squadron was stationed?
Answer: 9