sentences:  As with all other military areas, installations and zones within the country, the entire live-firing zone is strictly off-limits to all civilians and unauthorised vessels at all times of the day and the night.In SILFA, the Republic of Singapore Air Force (RSAF) conducts military exercises for aerial bombing and parachute/rappelling practices, and on Pulau Sudong, there is a runway and a small control-tower for (military) planes to land and takeoff before flying off to the nearby Pulau Pawai, on where a series of artificial ground-targets are located, for bombing exercises.While not often, the Republic of Singapore Navy (RSN) occasionally uses SILFA for naval gunnery drills and exercises.