NEW YORK--(BUSINESS WIRE)--SIGA Technologies, Inc. (NASDAQ: SIGA) today announced receipt of two contracts from the U.S. Air Force for a total of $2.3 million. SIGA received a one-year, $1.4 million contract with the Air Force Medical Service for the development of counter-measures against important potential biowarfare pathogens, the Dengue viruses, and other water-related viral agents. SIGA also received a one-year, $900,000 contract to aid the USAF Special Operations Command (USAFSOC) in its development of specific anti-viral agents, focusing on orthopoxvirus targets distinct from the target that is the focus of SIGA-246, the Company’s lead smallpox drug.