The accuracy of the rain fire recognition and targeting capability was demonstrated when three consecutive water drops put out a 12-inch circular propane-fueled fire ring that was emitting a flame that was three to six inches tall.
Additionally, the Rain system quickly modified the flight path to accommodate a crosswind of 8 to 10 knots (9.2 to 11.5 miles per hour) during each water drop.
In the Black Hawk cockpit, Sikorsky safety pilots kept an eye on the flying controls but remained passive until the plane touched down.