Airboss III: The Payback (2000)

An American attack submarine on patrol in the South China Sea intercepts an SOS from a Russian freighter. The freighter was attacked by unidentified frogmen on the high seas and high grade plutonium was stolen. The FBI suspects this attack is the work of Darian Cain, a former Russian Commando turned terrorist. When a special anti-terrorist team is formed, Special Operations (SPECOP) Commander Webb Buckley and navy seal Bone Conn are chosen to join their FBI counterparts special agent William Murphy and special agent Morgan Daniels and an uneasy alliance is struck between the military and the FBI. Their mission: to capture Darian Cain and bring him back to the U.S. to face justice and to recover the high grade plutonium.