How should a helicopter landing zone be marked during the day?

A helicopter landing zone (HLZ) should be marked during the day to ensure that pilots can easily identify it from the air. Using items such as a rifle positioned upright above the landing zone, along with a VS-17 panel, effectively signals to pilots where to land. The rifle can be a recognizable symbol and is often readily available, while the VS-17 panel is a high-visibility piece of equipment designed specifically for marking locations. This combination amplifies visibility in daylight conditions, making it easier for the pilot to see and safely approach the HLZ.

In contrast, relying solely on flares would not be effective during the day, as flares are typically used in low-light conditions. Reflective tape can assist in visibility but may not stand out against the natural surroundings as effectively as items like a VS-17 panel or a rifle. Additionally, ground lights are primarily for night operations and would not be visible during daylight. Therefore, marking the HLZ with a rifle and VS-17 is the most effective choice for daylight identification.