Singapore is set to acquire additional Hellfire missiles after the United States backed a proposed package valued at US$22.3 million. The US State Department said on Tuesday that it has approved the potential sale of an additional 24 AGM-114R Hellfire missiles to Singapore, along with related support services and equipment, bringing the total package to 67 missiles. Hellfire missiles are a type of precision air-to-ground weapon manufactured by Lockheed Martin.