Which of the following might signal the need for ground rescue in an emergency?

The scenario involving intercept or escort aircraft services is indeed a strong indicator of a situation requiring ground rescue. When an aircraft is being intercepted or escorted, it typically indicates a situation that is not standard and may involve communication issues or potential emergencies. The engagement of military or law enforcement aircraft to follow another aircraft generally stems from concerns about the aircraft’s intentions or safety, which could necessitate assistance upon landing.

The other scenarios mentioned do not inherently signal the need for ground rescue. Normal air traffic procedures indicate that everything is functioning as expected and does not suggest any urgent issues. Low altitude maneuvering is a routine procedure for many aircraft during approaches or training and does not inherently signal distress; it can occur in normal operations. Routine communication with ATC suggests that the aircraft is operating safely within established protocols and does not indicate a need for emergency response. Therefore, the choice concerning intercept or escort services is the most indicative of a situation that would require ground rescue.