What height is assumed above the departure end of the runway at USAF and USN fields?

The correct answer reflects standard protocol in aviation that assumes a height of 0 feet above the departure end of the runway at USAF and USN fields. This indicates that when considering takeoff procedures, the aircraft is generally at the same level as the runway immediately after departure. This practice allows for a standardized approach to flight safety, obstacle clearance, and performance calculations immediately following takeoff.

Adopting 0 feet as the height simplifies various calculations related to takeoff procedures, such as determining climb rates and ensuring that the aircraft can safely ascend without interference from the terrain or obstacles directly at the end of the runway. Understanding this baseline is crucial for pilots in planning their departures effectively and adhering to safety regulations.