Operation Vittles 

AKA the Berlin Airlift.

Started on 01 Apr 1948

Ended on 12 May 1949

Started out with 80 tons per day and increased to 3000 tons per day.

Involved 733 incidents with the Soviets and cost 39 British, 31 Americans, and 5 Germans.

See "Presidents' Secret Wars" page 26