Paul_in_Maryland
Flashlight Enthusiast
News video here; more articles here. According to the video, he flashed a light that was built into his schooner (spelling?). But according to other articles, he flashed his diving flashlight. I'm inclined to believe it was not his flashlight. If it were, he could have flashed it hours sooner. Only later, I gather, did he think of tilting his schooner to aim the light toward the helicopter.