On Sunday morning, August 30, 2020 during sunrise, ERV (energy recovery ventilation) units were airlifted by helicopter and installed on the rooftops of the Dayton Arcade's Rotunda, 4th Street, Ludlow, Commercial, McCrory and Lindsey Buildings for their new HVAC systems. The Arcade redevelopment project is a collaboration between lead developer Cross Street Partners, Model Group and McCormack Baron Salazar. For more information including leasing, visit arcadedayton.com. TOM GILLIAM / CONTRIBUTING PHOTOGRAPHER