The air policing mission under NATO is primarily concerned with which type of activity?

The air policing mission under NATO is fundamentally focused on Quick Reaction Alerts. This type of activity is designed to ensure the safety and security of airspace within NATO member states. Quick Reaction Alerts involve the readiness of aircraft to be scrambled rapidly in response to any unauthorized or potentially hostile intrusions into a member nation's airspace. The primary goal is to ensure a swift defensive response, thereby maintaining air sovereignty and deterring potential threats.

In contrast, long-term occupation involves a sustained military presence in a foreign territory, which does not align with the objectives of the air policing mission. Humanitarian missions typically focus on providing aid and support during crises rather than air defense operations. Tactical assaults pertain to offensive military operations aimed at achieving specific military objectives. These do not reflect the defensive posture of air policing, which prioritizes immediate response capabilities to protect NATO airspace.