John F. Kennedy

John Fitzgerald "Jack" Kennedy (May 29, 1917 – November 22, 1963), commonly referred to by his initials JFK, was an American politician who served as the 35th President of the United States from January 1961 until his assassination in November 1963. The Cuban Missile Crisis, The Bay of Pigs Invasion, the Nuclear Test Ban Treaty, the establishment of the Peace Corps, developments in the Space Race, the building of the Berlin Wall, the Civil Rights Movement, the "New Frontier" domestic program,and abolition of the federal death penalty in the District of Columbia all took place during his presidency. Kennedy also avoided any significant increase in the American presence in Vietnam, refusing to commit combat troops and keeping the level of others, mostly military advisors, to only 16,000, compared to the 536,000 troops committed by his successor, Lyndon Johnson, by 1968.

Kennedy's time in office is also marked by high tensions with Communist states, particularly Cuba. An attempt in April 1961 at the Bay of Pigs to overthrow the country's dictator, Fidel Castro, was thwarted by armed forces within three days. His administration subsequently rejected plans by the Joint Chiefs of Staff to orchestrate false-flag attacks on American soil in order to gain public approval for a war against Cuba. In October 1962, it was discovered Soviet ballistic missiles had been deployed in Cuba; the resulting period of unease, often termed the Cuban Missile Crisis, is seen by many historians as the closest the human race has ever come to war featuring the use of nuclear weapons on both or multiple sides.

JF

JF may refer to:

Grumman J2F Duck

The Grumman J2F Duck (company designation G-15) was an American single-engine amphibious biplane. It was used by each major branch of the U.S. armed forces from the mid-1930s until just after World War II, primarily for utility and air-sea rescue duties. It was also used by the Argentine Navy, who took delivery of their first Duck in 1937. After the war, J2F Ducks saw service with independent civilian operators, as well as the armed forces of Colombia and Mexico.

The J2F was an improved version of the earlier JF Duck, with its main difference being a longer float.

Development

The J2F-1 Duck first flew on 2 April 1936, powered by a 750 hp (559 kW) Wright R-1820 Cyclone, and was delivered to the U.S. Navy on the same day. The J2F-2 had a Wright Cyclone engine which was boosted to 790 hp (589 kW). Twenty J2F-3 variants were built in 1939 for use by the Navy as executive transports with plush interiors. Due to pressure of work following the United States entry into the war in 1941, production of the J2F Duck was transferred to the Columbia Aircraft Corp of New York. They produced 330 aircraft for the Navy and U.S. Coast Guard. If standard Navy nomenclature practice had been followed, these would have been designated JL-1s, but it was not, and all Columbia-produced airframes were delivered as J2F-6s.