Now, from very recent and very personal experience, let me tell you one more thing. I activated a PLB when a partner was not breathing. That was in a storm that although a helicopter was airborne in less than 30 mins, it was unable to reach us because of weather. We revived the injured person and self extricated to the trailhead. There we were met by a full emergency team who assured us that the PLB activation was a good response allowing them to follow up on the injuries.