Good Samaritan Jason Dowgiallo saw flares on his way home from fishing. He responded and saved three lives. Image: Cheryl Costello

VIDEO: Rescuers Speak Out after Boat Collision Near Bay Bridge

Life jackets, flares, a skilled police diver, and some brave fellow boaters. Those four factors are the reason a boatful of people is alive and safe. Their cuddy cruiser collided with another boat and overturned, sending three men into the water and trapping a fourth man under the boat.

Cheryl Costello hears firsthand from the good Samaritans who responded to a distress signal south of the Bay Bridge, and from the diver who risked his life to save another. Watch below: