The aftermath of World War II was the beginning of an era defined by the decline of the old great powers and the rise of two superpowers: the Soviet Union (USSR) and the United States of America (USA).
 Allied during World War II, the USA and the USSR became competitors on the world stage and engaged in the Cold War, so called because it never resulted in overt, declared hot war between the two powers but was instead characterized by espionage, political subversion and proxy wars. Western Europe and Japan were rebuilt through the American Marshall Plan whereas Eastern Europe fell under the Soviet sphere of influence and eventually an "Iron Curtain".
 Europe was divided into a US-led Western Bloc and a Soviet-led Eastern Bloc.
 Internationally, alliances with the two blocs gradually shifted, with some nations trying to stay out of the Cold War through the Non-Aligned Movement.
 The Cold War also saw a nuclear arms race between the two superpowers; part of the reason that the Cold War never became a "hot" war was that the Soviet Union and the United States had nuclear deterrents against each other, leading to a mutually assured destruction standoff.
This a timeline of the main events of the Cold War, a state of political and military tension after World War II between powers in the Western Bloc (the United States, it's NATO allies and others) and powers in the Eastern Bloc (the Soviet Union, its allies in the Warsaw Pact and later the People's Republic of China).
During the Cold War, a number of pilots from various nations (Eastern Bloc, Western Bloc, and non-aligned) defected with their aircraft to other countries.
The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc (the Soviet Union and its satellite states) and powers in the Western Bloc (the United States, its NATO allies and others).
 Historians do not fully agree on the dates, but a common timeframe is the period between 1947, the year the Truman Doctrine (a U.S. foreign policy pledging to aid nations threatened by Soviet expansionism) was announced, and 1991, the year the Soviet Union collapsed.
The Niagara Falls Air Force Missile Site was a Cold War USAF launch complex for Boeing CIM-10 Bomarc surface-to-air missiles. Equipped only IM-99Bs (46 missiles: solid-state, solid-fuel booster), the site had 48 Model IV "coffin" shelters, after an initial design with a secure area of ~20 acre to have 28 shelters (the planned site had additional area for 84 "future shelters").
 Launch control for the site's missiles was by central NY's "Hancock Field combined direction-combat center" (CC-01/DC-03) at Syracuse, New York.
 DC-03 was operational on December 1, 1958; (CC-01 was the "first SAGE regional battle post", beginning operations "in early 1959".)
Cold War II (also called the New Cold War, Second Cold War and Cold War 2.0) refers to a renewed state of political and military tension between opposing geopolitical power-blocs, with one bloc typically reported as being led by Russia and/or China, and the other led by the United States or NATO.
 This is akin to the original Cold War that saw a global confrontation between the Western Bloc led by the United States and the Eastern Bloc led by the Soviet Union, Russia's predecessor state.
 American political scientist Robert Legvold posits that the "new Cold War began the moment we went over the cliff, and that happened with the Ukraine crisis."
 Others, such as Andrew C. Kuchins in 2016, believe that the term is "unsuited to the present conflict," but the situation is arguably more dangerous than during the original Cold War.
 One of the primary features of the "New Cold War", as first defined by Philip N. Howard, is that conflict is experienced primarily over and through broadcast media, social media, and information infrastructure.
The Western Bloc or Capitalist Bloc during the Cold War refers to the countries allied with the NATO against the Soviet Union and its allies.
 The latter were referred to as the "Eastern Bloc".
 The governments and press of the Western Bloc were more inclined to refer to themselves as the "Free World" or the "Western world".
Eastern Bloc politics followed the Red Army's occupation of much of eastern Europe at the end of World War II and the Soviet Union's installation of Soviet-controlled Stalinist or Marxist–Leninist governments in the Eastern Bloc through a process of "bloc politics" and repression.
 The resulting governments contained vestiges of western democracies to initially conceal the process.
Encounter at the Elbe (in Russian: Встреча на Эльбе ) is a Soviet movie released in 1949 from Mosfilm, describing the conflict, spying, and collaboration between the Soviet Army advancing from the east and the U.S. Army advancing from the west.
 The two allied forces met each other for the first time on the River Elbe near the close of the Second World War.
 This meeting occurred on April 25, 1945, which was usually remembered as “Elbe Day” in Western Bloc nations and as the "Encounter at the Elbe” in Eastern Bloc nations.
Incomplete list of Western Bloc intelligence agents, military personnel, scientists, politicians, diplomats, and other prominent people who defected to Eastern Bloc or non-aligned countries during the Cold War.

Question: What was a USAF launch complex during the state of geopolitical tension after World War II between powers in the Eastern Bloc and powers in the Western Bloc?
Answer: Niagara Falls Air Force Missile Site