Fodor90/iStock via Getty Images Williams Companies (NYSE:WMB) is a more than $50 billion midstream companies that barely ekes its way to a double-digit AFFO yield. As we'll see throughout this article, the company has the ability to maintain its 4.27% dividend, and drive future shareholder returns. We last discussed this company in January, and since then, it has heavily outperformed the S&P 500 by more than 10%, as we highlighted its strong assets and growth potential. The company's higher price means  ...