abd tarafindan kullanilan savunma uyarilma skalasi. *
DEFCON 5 Lowest state of readiness
DEFCON 4 Increased intelligence watch and strengthened security measures
DEFCON 3 Increase in force readiness above that required for normal readiness
DEFCON 2 Next step to nuclear war
DEFCON 1 Nuclear war is imminent
'62 yilinda en yuksek defcon 2 gorulmustur. 9/11 olaylarinda bu seviye 3'tur.
