Under what circumstances may aircrew file to or land USAF aircraft at US civil public airports?

Aircrew may file to or land USAF aircraft at US civil public airports primarily when a US Government tenant unit is associated with the airport of intended landing. This circumstance is significant as it reflects the operational integration between military and civilian aviation authorities. When such a tenant unit is present, it often provides the necessary permissions, facilities, and support to accommodate military operations at civilian airports.

This situation might arise in instances where there's a requirement for the military to access civilian air facilities, such as for transport missions, training, or logistical support. It creates a collaborative environment where military and civilian operations can co-exist beneficially, reinforcing the importance of inter-agency cooperation.

While emergency landings are indeed a critical aspect of aviation safety, they are not the only circumstance under which military aircraft can land at civilian airports. Similarly, UAV operations and restrictions based on daylight hours pertain to specific operational rules but do not encapsulate the broader policy regarding military access to public airspace and airports.