Which organization is tasked with the air defense of North America?

The organization responsible for the air defense of North America is NORAD, which stands for North American Aerospace Defense Command. Established during the Cold War, NORAD is a combined effort between the United States and Canada, designed to monitor and defend North American airspace against potential airborne threats, including aircraft, missiles, and space vehicles.

NORAD operates with a network of radar systems and satellite data to detect and track any suspicious aerial activity, allowing for prompt response measures. Its primary mission includes deterrence, warning, and defense operations concerning air threats in North American airspace.

The other organizations mentioned have different roles: USNORTHCOM focuses on land and maritime defense operations within North America but does not specialize exclusively in air defense; ACC (Air Combat Command) provides command and control of air forces but is not specifically solely responsible for North America's air defense. AFNOR is not a recognized organization in the context of North American air defense. This makes NORAD the clear choice for the air defense mission in North America.