SyberJet Aircraft formerly Emivest Aerospace Corporation and prior to that Sino Swearingen Aircraft Corporation SSAC is an aircraft manufacturer. Their primary product is the Swearingen SJ30-2 small business jet. The company's headquarters is on the property of San Antonio International Airport in San Antonio Texas with additional assembly facility in the John D. Rockefeller IV Technology Center at Eastern West Virginia Regional Airport - Martinsburg (KMRB) in Martinsburg West Virginia.