The company's most valuable asset and the largest source of honest income, the 1930s-era Northern Natural Gas company, was eventually purchased by a group of Omaha investors, who relocated its headquarters back to Omaha; it is now a unit of Warren Buffett's Berkshire Hathaway Energy. NNG was established as collateral for a $2.5 billion capital infusion by Dynegy Corporation when Dynegy was planning to buy Enron. When Dynegy examined Enron's financial records carefully, they repudiated the deal and dismissed their CEO, Chuck Watson. The new chairman and CEO, the late Daniel Dienstbier, had been president of NNG and an Enron executive at one time and was forced out of Enron by Ken Lay. Dienstbier was an acquaintance of Warren Buffett. NNG continues to be profitable now.