 The plane was owned by the University Research Foundation. It was established by the University of Maryland. The flights are used to conduct research. We've learned that a fifth suspect has been arrested in connection with that shooting at Manassas Mall earlier in the month. Prince William County Police identified 18-year-old Tavion Thornton for involvement in the parking lot shooting back on July 9th that injured two people. Thornton is the last of five men identified for his involvement in a fight between two groups that led to shots being fired.