Berlin Airlift, the Americans put into practice the Truman Doctrine, maintained the Western hold on Berlin, some descriptive detail, they faced down the threat from Stalin and the Soviets to strangle Berlin, it remained a capitalist beacon in that Soviet sphere of influence and was hated by the Soviets, was an affront to have that capitalist supported part of Berlin deep in East Germany
first sustained use of Truman Doctrine, massive spending, determination that the Allies would not be ejected from Berlin