Where can I watch Secret Millionaire in United States?

Some of America's wealthiest people leave behind their lavish lifestyles, sprawling mansions and luxury jets, conceal their true identities, and go to live and volunteer in some of the most impoverished and dangerous communities in America. Their mission is to discover the unsung heroes of America—deserving individuals who continually sacrifice everything to help those in need. At the end of the week, in an emotional and dramatic climax, they reveal their true identities and change lives forever.