The Republic of Singapore Air Force's (RSAF) AH-64D Apache Longbow attack helicopters are armed with Hellfire missiles.

The US$22.3 million deal aims to strengthen the defences of the city state, which is a key US strategic partner in Asia.

The US$22.3 million deal aims to strengthen the defences of the city state, which is a key US strategic partner in Asia.

The Republic of Singapore Air Force's (RSAF) AH-64D Apache Longbow attack helicopters are armed with Hellfire missiles.