On saturday april 21, 2012 i responded to a boating incident on the savannah river. Lcpl and pfc responded as well. The 2 subjects that were involved in the boating incident were at memorial hospital in savannah ga. I responded to where the boat was to be located. The operator of the boat told us on the phone that the boat was located at millstone landing. Lcpl responded to millstone landing but the boat was not there. We then went to operator's house where we found him and the boat which was tied up to the dock in the water at his residence. Upon arriving i talked with operators about what happened and he was very uncooperative. I asked operators about what happend that led up to the incident and he did not remember anything. Operators was uncooperative in answering my questions and he told me that he had his son in the boat and he was at the hospital getting treated due to the incident. There was heavy damage to the right side of the bow of the boat. I took pictures of the boat and kept them as evidence. On sunday april 21, 2012 i went to memorial hospital to check on operators son and to question him about the incident. mother was at the hospital with her son while i was questioning him. He told me some things about what happened but not enough to figure out if the incident occurred in south carolina or Georgia. Several days after the incident operator's son remembered some things about the incident. I talked to him on the phone about what he remembered. He told me that they went up river from their dock and fished for awhile then came back down river towards their dock and in the process hit a tree and he was knocked unconscious for a short period of time. Upon my observation of the boat it hit a tree on the river bank. I patrolled the south carolina and georgia bank to see if i could find out where it occurred but i was unsuccessful.