This impressed River Rock to consider making a similar announcement of its own. 1 mass shooting in Las Vegas when MGM's foundation issued a public statement that it would make a contribution to help victims and first responders. 'Our message was meant to help heal and inspire those that had lost everything, as well as those who were determined to help rebuild their homes and the community,' Wright said. Shortly after the October fires, Tribal Chairman Chris Wright of the Dry Creek Rancheria Band of Pomo Indians, owners of the River Rock Casino, decided that River Rock should develop a public service announcement for the community carrying a message of hope and strength as a statement of support - a message that had nothing to do with the casino.