Rick Lagina is a retired postal worker. The brothers are able to afford their treasure hunts thanks to Marty’s business success.  Marty Lagina has been extremely successful in the business world, having founded a company called Terra Energy, which was eventually sold for close to $60 million. Marty used the proceeds from that sale to launch a new wind energy business called Heritage Sustainable. Today, Heritage is the largest wind producer in Michigan and one of the largest in the Midwest.