 Israel Aerospace Industries (IAI) (formerly Israel Aircraft Industries), is the largest defense contractor in Israel.It sells worldwide, although the United States has, on occasion, blocked a sale, which included US technology, to a nation the US considered unfriendly.Within the context of SIGINT and related ISTAR product is the airborne Phalcon system, often described as an AWACS radar and battle management system, but having significant ELINT capabilities.