DEFCON 3, Round House Or Yellow Alert Level
DEFCON 3, or Round House is an increase in alertness and military readiness, also known as 'yellow alert' status. With Defcon 3 the air force is in a higher state or level of readiness so that they can deploy and mobilize within 15 minutes time.
The alert color for DEFCON 3, or Round House is yellow. The meaning behind this condition level is similar to that of a yellow "caution" sign. We are prepared, cautious and in a state of military readiness. This condition represents a state of preparedness and a high level of caution.
The alert status may be raised to Defcon 3, or Round House after a precision strike is carried out by an an enemy. This condition may also be reached after a precision strike is carried out by the United States military or any event that warrants a cautious state of military readiness and alert by U.S forces.