International Owl Center -. Vocalizations. Most people know that Great Horned Owls hoot. But most don't realize that there are several types of hoots, plus a variety of chitters, squawks, hisses, and bill clacking also in their repertoire.
TSC is a high technology company primarily engaged in providing engineering consulting services and specialized products to the U.S. Government and industry. Consulting and research services span the systems life cycle from advanced concept development through logistics support.
TSC aspires to be the key technical resource for its customers and to be alert for new opportunities to expand the range and relevance of the engineering and products that we provide to programs of national importance.