Which of the following options is NOT a type of signal used in Line 7 of MEDEVAC?

In the context of MEDEVAC (Medical Evacuation) operations, Line 7 specifically refers to the type of signals that can be used to indicate the landing zone and communicate to the aircraft that it is safe to land.

The correct answer highlights that a flare is typically used for illumination or signaling in many military operations; however, it is not classified as a standard signal type in Line 7 for MEDEVAC purposes. Instead, Line 7 acknowledges methods such as panels, smoke signals, and pyrotechnic signals, which are specifically utilized to designate the landing area clearly and effectively for incoming medical evacuation helicopters.

Panels provide a visible ground-based marking that can help pilots identify the location. Smoke signals can be used to create a conspicuous visual reference, especially useful in conditions where visibility is limited. Pyrotechnic signals give off bright, visible bursts that can be easily seen from the air, helping to guide the aircraft to the correct location.

Thus, the flares, while useful in many contexts, do not fit the defined types of signals applicable for Line 7 during MEDEVAC operations, making it the correct response to identify as not being included in that particular category.