Tri Star Career Compact students install the trusses on a house at 1355 Touvelle St., Celina, with the aid of a crane. Twelve high school seniors from Celina, Coldwater, Marion Local, New Bremen and St. Henry began building the house in August as part of Tri Star's construction program, said Brian Stetler, Tri Star assistant director. The goal is to enclose the house before winter so they can work on the interior during the colder months. They plan to finish the project by May before the students graduate, he said, noting the house will be up for auction in June.