I was awakened early this morning by the sound of a helicopter passing overhead. This is a bit unusual as I live in an area that is usually oblivious to the noise from air traffic. Perhaps it was a life flight copter making an approach via a different route?
After several passes, over 30 minutes, I concluded that this wasn’t the case. A quick call revealed the answer: An ELT (emergency locator transponder) beacon had been activated and the US Coast Guard Helicopter was trying to find the source. As of 0630-the helicopter was still flying passes over the area.