RedactedNarrative: On 07/20/2014, at approximately 1430, victim was reported missing after he jumped into the water off of a rental pontoon boat in Boulder Basin on Lake Mead. According to witness statements, Victim jumped into the water without a PFD in order to assist another swimmer from his party who appeared to be struggling. Due to the wind and 2 to 3 foot waves, Victim began to tire and call for help. The occupants of the vessel attempted to throw him Type 1 PFDs but he was unable to secure one before they drifted away. Witnesses stated the saw Victim disappear in the waves and never resurface. The vessel was not under power at the time Victim entered the water and the occupants stated they had trouble getting the engine to start. After approximately 2 to 3 minutes they said they were able to start the engine and attempt to search for Victim. A search was conducted by NPS and NDOW and at the time of this report, the victim is still missing.