What condition is characterized by DEFCON 3?

DEFCON 3 is characterized by an increased readiness above normal levels. At this state, the military is prepared to respond more quickly to potential threats or crises. It indicates that the situation is tense, and forces are on standby, ready to mobilize if necessary. This heightened state of readiness means that while there is no immediate threat that requires full activation, the military forces must remain vigilant and prepared to act swiftly.

In contrast, normal readiness signifies standard operations without heightened preparations, while a decrease in force readiness implies a lessened state of alert. Maximum force readiness would be indicative of DEFCON 1, which signifies an imminent threat requiring immediate action. Therefore, DEFCON 3's definition fits the option describing increased readiness above normal levels effectively.