Which device functions as a Day Flare?

• A. MK-79 Day Flare
• B. MK-124 Day Night Signal
• C. Signal Mirror
• D. Smoke Signal

Answer: (A)

In daylight signaling, you want a device that creates a bright, high-contrast signal on its own, without needing the sun. A Day Flare is a small, one-shot pyrotechnic that you ignite to produce a vivid flame or smoke plume that is easily seen from a distance during the day. The MK-79 Day Flare is specifically designed for this purpose, giving a conspicuous daytime signal to attract attention quickly.

The other options work in different ways or at different times. A signal mirror relies on sunlight being reflected toward a rescuer, which requires the observer to be oriented and the sun to be in the right place. A smoke signal is visible in daylight, but it isn’t a flare and doesn’t provide the same instantaneous, bright signal as a dedicated flare. The MK-124 is a Day/Night signal intended for both day and night use, not a device labeled as a Day Flare. Therefore, the MK-79 Day Flare is the best fit for a daytime distress signal.