Short answers, pulled from the story.
The Soviet Union blockade of Berlin began on the 24th of June 1948 when Joseph Stalin ordered Soviet troops to block all rail and barge traffic. The blockade ended at one minute after midnight on the 12th of May 1949 when the Allies announced an agreement to lift it.
American commander Lucius D. Clay gave the order to launch Operation Vittles on the 25th of June 1948. General Curtis LeMay and General William Tunner later formed the Combined Airlift Task Force to oversee USAFE and RAF lift operations from a central location.
The United States Air Force delivered 1,783,573 tons of cargo during the operation. This amount combined with Royal Air Force deliveries totaling 2,326,406 tons for the entire airlift effort.
A Soviet Air Force Yakovlev Yak-3 fighter collided with a British European Airways Vickers Viking 1B airliner near RAF Gatow airfield on the 5th of April 1948. The collision killed all aboard both aircraft.
Lieutenant Gail Halvorsen dropped chocolate bars attached to parachutes made from handkerchiefs as a goodwill gesture after handing out gum to children at Tempelhof airport. He wiggled his wings to identify himself to the waiting children which led to the operation being called the Candy Bomber mission.