Security ... think about it!
When the helicopter took off from a guided missile destroyer, it was about 4,000 meters away from the MSDF destroyer Suzunami. As the chopper flew closer to the Suzunami, the destroyer ordered it several times by radio not to fly any closer to the Japanese destroyers. However, the helicopter ignored the orders and continued toward the Suzunami. Ultimately the helicopter was only about 90 meters away from the Suzunami at a height of about 30 meters, lower than the destroyer's mast.