Frank Beafore, right, executive director of SelectTech GeoSpatial Advanced Manufacturing Facility in Springfield, shows one of the company's vertical takeoff and landing sensor platforms, an unmanned aircraft system, to Tim Johnson, an engineer at the Air Force Research Laboratory. The two were attending the Ohio UAS Conference hosted by the Dayton Development Coalition Tuesday, April 23. The conference continues today at Sinclair Community College. CHRIS STEWART / STAFF