"I think Billy would be proud of me doing it," said Hogan. "I'm going to keep on doing it until something's done, until we find it."
In December of 2015, Malcolm Brydon stepped in to help Hogan. The retired FAA Air Traffic Control Specialist reached out to DEEMI Search and Rescue, using their technology in a 2016 search at Mt. Waldo in Frankfort.
"It's just a huge network of volunteers to help the Hogan family find closure," said Brydon. "That's really what it's all about here."
Hogan and Brydon are now asking hunters, hikers and anyone who plans on being in the woods to look for any plane wreckage.
Through different leads, the search team has been able to narrow down a likely region that Billy could've crashed in. Hogan says he won't give up in the search.