In which airspace do military training operations usually take place?

Military Operations Areas (MOAs) are specifically designated airspace where military training activities, such as exercises or maneuvers, take place. The primary purpose of an MOA is to segregate military training activities from civilian air traffic, thereby ensuring both safety and access to airspace for military operations. Within these areas, military aircraft may conduct training operations, and it is important for pilots to be aware of the potential for military activity in these regions.

While other types of airspace such as Alert Areas, Restricted Areas, and Controlled Firing Areas are also associated with military operations, they serve different purposes. Alert Areas are meant to caution pilots about unusual air activities rather than restrict airspace. Restricted Areas typically contain hazards to flight and require pilots to obtain clearance prior to entering, and Controlled Firing Areas are used for live-fire training but do not restrict air traffic as they only become hazardous when live fire is active, and pilots can resume operations safely once cleared. Therefore, MOAs are the most directly associated with routine military training operations.