The financially troubled Cocoa (Fla.) Expo Sports Center has filed for chapter 11 protection, along with its CEO, Orlando businessman Jeff Unnerstall, the Orlando Sentinel reported yesterday. The sports center listed debts totaling $22.8 million on its bankruptcy court petition; that includes almost $11 million owed to Bank of Washington and $7.2 million owed to the Urban Development Fund of Chicago. The expo listed the loans as secured by its property, valued at around $10 million. Unnerstall also told the court he has ownership interest in Neptune Bay Apartments in St. Cloud, Fla., which is also pledged as collateral on the Bank of Washington loan.