DEFCON Level 3

At this level in military readiness, The Air Force is ready to mobilize in 15 minutes. Base operations are changed significantly, with added security personnel. All Air Force essential personnel remain on base and are ready to mobilize and deploy. This condition also requires all military personnel to stay within fifty miles of their operating base. Commanders may order all their personnel to remain on base. DEFCON 3 corresponds to situations where there is a possibility of military action against the U. S. or our allies.