The Japanese frogman unit was the elite of the Marine Corps. They were alleged to be the crème de la crème, because they not only had to be proficient in amphibious operations, but also had to have more special skills than the special task force that focused on land training.
Of course, as the name suggested, they mainly specialized in underwater surprise attacks and reconnaissance.
Carrying specialized scuba gear on their backs, they aimed their APS underwater assault rifles at Huo Shaoheng and his men.
The APS underwater assault rifle was specifically reserved for underwater use. The trajectory of the bullet relied upon fluid mechanics, so there was no rifling in the gun. Also, the bullet's shape was more slender, which maximized the speed without causing bubbles in the water.
One Special Operations Forces member had been killed and the other injured by this rifle.
Huo Shaoheng turned around in the water to fully grasp his situation.