1. Place a group of divers with you as the leader height -10m down below the surface of the sea, somewhere in the sea (where the sea floor is about 10m - 15m)
2. Place a group of enemy boats nearby, special: no formation.
3. Swim towards the boats maintaining depth.
4. Observe the AI shooting the boats, and one of the team members throws a grenade.
5. Try again at different depths.