In United States military doctrine, LERTCON is an abbreviation of Alert Condition, and is a measure of the level of action and readiness to be taken in a given situation. There are specific procedures laid out for responses to changes in LERTCON. LERTCON levels can be broken down into high-alert Emergency Condition levels (EMERGCON

EMERGCON

EMERGCON is a state of readiness that is separate from DEFCON, or defense readiness condition used by the United States, in that it incorporates civilian measures in addition to the DEFCON military measures....

s) and the more common Defense Condition levels (DEFCON

DEFCON

A defense readiness condition is an alert posture used by the United States Armed Forces. The DEFCON system was developed by the Joint Chiefs of Staff and unified and specified combatant commands. It prescribes five graduated levels of readiness for the U.S...

s).

See also

• FPCON
  Force Protection Condition
  In United States security, Force Protection Condition is a terrorist threat system overseen by the Department of Defense directive, and describes the amount of measures needed to be taken by security agencies in response to various levels of terrorist threats against military facilities, as...
  
  
• INFOCON
  Information Operations Condition
  -Descriptions of INFOCONs:INFOCON is a threat level system in the United States similar to that of FPCON...
  
  
• DEFCON
  DEFCON
  A defense readiness condition is an alert posture used by the United States Armed Forces. The DEFCON system was developed by the Joint Chiefs of Staff and unified and specified combatant commands. It prescribes five graduated levels of readiness for the U.S...
  
  
• REDCON
  REDCON
  In the U.S. military, the term REDCON is short for Readiness Condition and is used to refer to a unit's readiness to respond to and engage in combat operations. There are five REDCON levels, as described below in this excerpt from Army Field Manual 71-1....
  
  
• Alert state
  Alert state
  An alert state is an indication of the state of readiness of the armed forces for military action or a State against terrorism or military attack.Examples are the DEFCON levels of the US armed forces, and the British government's UK Threat Levels....