Which of the following characteristics is indicative of NOE operations?

NOE (Nap-of-the-Earth) operations are characterized by flying close to the terrain to enhance the aircraft's ability to avoid detection by enemy radar or visual observation. The essence of NOE flying involves the use of varying airspeeds and altitudes to maneuver effectively in the complex and changing environment of the terrain.

When conducting NOE operations, pilots frequently adjust both airspeed and altitude in response to the landscape's contours, obstacles, and the tactical situation. This adaptability allows for more effective navigation and enhances flight safety while also increasing the chances of mission success in hostile environments. By using varying speeds and altitudes, pilots can remain agile and adapt to immediate threats, as well as the natural variations in the terrain.

In contrast, operating at low speeds only would limit maneuverability, while maintaining a constant altitude would diminish the benefits of terrain masking and could increase vulnerability. High altitude flying for reconnaissance does not fit the NOE profile, as it typically involves flying at a safer distance from the ground, which negates the advantages of low-altitude operations.