RedactedNarrative: Subjects were fishing on the river and the two decided to fish by Gill's Landing. Occupant asked Operator if he should anchor. Operator who was operating stated that he would tie the post to a post by the sea wall. In the process Operator lost his grip and fell into the water. Operator went under water a couple of times before Occupant was able to grab operator's hand. Occupant told Operator to hold onto the anchor as Occupant turned off the motor. They continued to drift down river. Occupant told Operator to hold on and they will drift to shallow water. Operator told Occupant he could not make it. A passing pontoon boat stopped and one occupant jumped into the water to assist. They were able to get life preserve under Operator. They then pulled Operator onto the pontoon boat. As they pulled Operator out of the water Operator reached into his pocket and pulled out a bottle of "Nitro Pills" and asked for one. Occupant gave one pill to Operator. Shortly after Occupant saw Operator's eyes roll back. They then transported Operator to Gill's Landing and met with the Sheriff Deputies and EMS. Operator was transported to Riverside Medical Center.