DEFCON Levels

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Updated June 8, 2023 Fact-Checked DEFCON Levels

DEFCON stands for Defense Readiness Condition. Levels range from DEFCON 1 to DEFCON 5, with DEFCON 1 being the highest level of readiness. To the public’s knowledge, the U.S. has […]

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• Written by Joe Wallace
• Reviewed by Andrew Stamp

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DEFCON stands for Defense Readiness Condition. Levels range from DEFCON 1 to DEFCON 5, with DEFCON 1 being the highest level of readiness. To the public’s knowledge, the U.S. has never reached DEFCON 1.

The U.S. Joint Military Command and the Joint Chiefs of Staff set the current DEFCON level. Government officials do not publicly distribute the active DEFCON level to prevent panic among U.S. citizens.

Based on the uncertainty of the war between Russia and Ukraine, and OSINT (Open Source Intelligence), the current DEFCON level is likely at DEFCON 3.

DEFCON Levels Chart

Readiness Condition	Exercise Term	Situation	Description
DEFCON 1	Cocked Pistol	War is imminent.	Maximum readiness. Immediate response.
DEFCON 2	Fast Pace	Hostile action is possible. Serious threat to U.S. forces or U.S. allies.	Further increase in force readiness.
DEFCON 3	Round House	Increased regional tensions with possible U.S. force involvement.	Increase in force readiness.
DEFCON 4	Double Take	Regional tensions requiring greater vigilance. No U.S. force involvement.	Increased intelligence watch and analysis of the political/military situation in the area of tension,
DEFCON 5	Fade Out	Normal readiness	Lowest state of readiness

Printable Defense Readiness Condition (DEFCON) Level Charts

• DEFCON Levels PDF
• DEFCON Levels Image

The Joint Chiefs of Staff developed the system in 1959 to “ensure timely, accurate and clear direction of commands” and to achieve “greater effectiveness of U.S. forces in preparation for execution of contingency or emergency war plans,” according to the Joint Chiefs of Staff memo, “Uniform Readiness Conditions.”

DEFCON levels range from DEFCON 5, normal, to DEFCON 1, maximum readiness. Each indicates appropriate actions that commanders can take in response to the threat level, according to the Joint Chiefs of Staff memo.

EMERGCONs

Emergency conditions, or EMERGCONs, are specific national threat levels that reflect the reaction to an intercontinental ballistic missile (ICBM) attack or potential attack, according to documents published by the Navy’s surface warfare officer (SWO) school command.

What are these EMERGCONs?

According to the Navy’s SWO school command, there are two EMERGCONs:

• Defense Emergency: A defense emergency involves a “major attack” on overseas U.S. forces or allies in any area, confirmed either by the commander of a unified or specified command or higher authority, or an overt attack of any type on the U.S.
• Air Defense Emergency: An emergency where an attack on the U.S., Canada or military installations in Greenland “by hostile aircraft or missiles” is probable or in progress.

Note: “Other forces go to DEFCON 1 during an EMERGCON,” according to the Federation of American Scientists’ Nuclear Information Project.

What DEFCON Levels Are Not

The DEFCON system should not be confused with the National Terrorism Advisory System – which replaced the Homeland Security Advisory System in 2011 – or other threat warnings the DOD uses or has used in the past.

These systems indicate the risk of terrorist attacks in the U.S., according to the Department of Homeland Security:

• The National Terrorism Advisory System (NTAS) alerts provide the public with information about terrorist threats. You can find the most up-to-date alerts on the NTAS website. “These alerts include a clear statement that there is an imminent and/or elevated threat to the public,” according to DHS.
  • Imminent threat: A verified, specific and impending terrorist threat against the U.S.
  • Elevated threat: A verified terrorist threat against the U.S.
• The Homeland Security Advisory System (HSAS), introduced by President George W. Bush in 2002, was a color-coded system that included the following levels:
  • Red: Severe threat or risk
  • Orange: High risk or threat
  • Yellow: Elevated, significant risk
  • Blue: “Guarded” or general risk
  • Green: Low risk

The U.S. has not used the HSAS since 2011.

• Force Protection Condition is the system U.S. military bases use. Marine Base Camp Pendleton lists these in increasing order of threat level, as:
  • Normal
  • Alpha
  • Bravo
  • Charlie
  • Delta
  • FPCON Charlie indicates that a threat or terrorist act “occurs within the commander’s area of interest,” and Delta indicates a terrorist attack has occurred or specific installations have received a threat, according to the DLA article. FPCON is a localized tool, not a DOD-wide readiness condition. Individual military bases set varying levels of FPCONS depending on current threats, mission requirements and other variables.
• Information Operations Condition (INFOCON), created in 1999,is a cybersecurity threat-level indicator. INFOCON takes a readiness-based approach rather than a threat-based one, according to a 2006 DOD publication titled “Department of Defense Information Operations Condition (INFOCON) System Procedures.” The Joint Chiefs of Staff introduced the Cyber Condition (CYBERCON) system as a future replacement for INFOCON in 2015, according to a Chairman of the Joint Chiefs of Staff Instruction.
• Watch Condition (WATCHCON) is a system that “basically expresses a combatant commander’s concern about a potential threat and the ability to provide future warnings,” said Pentagon Press Secretary John F. Kirby in a 2021 press briefing. There are five WATCHCON levels, according to GlobalSecurity.org:
  • WATCHCON 5: Normal conditions
  • WATCHCON 4: Normal conditions with a potential threat
  • WATCHCON 3: Increased threat
  • WATCHCON 2: Significant threat
  • WATCHCON 1: Clear and immediate threat of attack

DEFCON Level History

Here are some of the most significant DEFCON level changes in U.S. history.

Instances of DEFCON 2 or 3

The U.S. initiated threat levels DEFCON 2 and 3 several times, according to the National Security Archives. These instances include:

• Paris Summit Collapse: In May 1960, Secretary of Defense Thomas S. Gates tried out the new DEFCON system as a precaution following the collapse of the Paris Summit.
• Cuban Missile Crisis: The U.S. issued a DEFCON-2 alert on Oct. 24, 1962. Most of the armed forces were at DEFCON 3, but U.S. strategic nuclear forces were at DEFCON 2.
• Operation Paul Bunyan: On Aug. 21, 1976, the U.S. issued a DEFCON-3 alert in response to an attack by North Korean forces.
• Middle East War: Secretary of State Henry Kissinger issued a DEFCON-3 alert in Oct. 1973 during the Middle East War.
• Persian Gulf War: The joint chiefs of staff declared DEFCON 2 on Jan. 15, 1991, during the opening phase of Operation Desert Storm in the Persian Gulf.
• Attack on the Twin Towers: On Sept. 11, 2001, the United States entered DEFCON 3 following the attack on the World Trade Center.

Global and Localized Defense Condition Levels

Though the United States military uses DEFCON levels, it’s not a globally accepted threat warning system.

Not all DEFCON level changes affect or require the use of the entire military or DOD. Some changes to DEFCON levels may be appropriate for a specific unit, base or mission, while the rest of the DOD remains at a different level.

According to the Smithsonian’s Air & Space Magazine, no global DEFCON-level change has been higher or more severe than DEFCON 3. While the United States reached DEFCON 2 during the Cuban Missile Crisis of 1962 and the Persian Gulf War in 1991, these levels did not change globally.

Is the DEFCON Level Public?

No. Unless you are in U.S. government intelligence circles, you cannot view immediate changes to the DEFCON level. Because of the possibility of panic among U.S. citizens, actual minute-by-minute changes in DEFCON are only available to high-ranking military personnel and government officials.

How Can I View the DEFCON Level in Real-Time?

Only top-level intelligence personnel, government officials (like the president of the U.S.) and high-ranking military personnel can view the DEFCON level in real-time.

You can find the DEFCON level (within a day or so) online at the DEFCON Level Warning System, a private open-source intelligence analysis organization. Bear in mind this information doesn’t come from a government agency, so it’s unreliable for day-to-day strategic planning.

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  Written by Joe Wallace

  Joe Wallace is a 13-year veteran of the United States Air Force and a former reporter for Air Force Television News.

• 

  Reviewed by Andrew Stamp

  Andrew Stamp served in U.S. Army special forces for more than 10 years and is currently pursuing his Chartered Financial Consultant (ChFC).

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