The DEFCON System: A Brief History and Explanation
TLDR The DEFCON system was created in response to the development of intercontinental missiles and nuclear weapons, providing a simplified alert system for military readiness. DEFCON 1, the highest level of readiness, has only been declared a few times in the past 60 years, with the most recent instance being during the Yom Kippur War in 1973.
Timestamped Summary
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The development of intercontinental missiles and nuclear weapons necessitated the creation of the DEF CON system for rapid mobilization and readiness.
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The creation of the North American Aerospace Defense Command (NORAD) in 1957 led to the development of the Defense Readiness Condition (DEFCON) system, which simplified the alert system for military units to quickly adopt a state of readiness.
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The lowest state of readiness is DEFCON 5, which signifies a peaceful stand down, and DEFCON 4 indicates increased intelligence watch and security measures.
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DEFCON 3 is a much higher state of readiness where pilots might be in flight suits on standby next to their planes and soldiers and missile silos might close their blast doors, and DEFCON 2 is the next step to war with bombers in the air and the president likely in Air Force One or on their way to a safe location.
04:47
DEFCON 1, also known as Cocked Pistol, is the highest level of readiness in the DEFCON system and has only been declared a few times in the past 60 years, with the most recent instance being during the Yom Kippur War in 1973.
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DEFCON 3 was used in 1976 in response to the demilitarized zone axe murder incident in South Korea, and again on September 11, 2001, after the terrorist attacks on New York and Washington, to put all US forces worldwide on alert.
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DEFCON 2 was used in response to the start of Operation Desert Storm in 1991, and thankfully DEFCON 1 has never happened.