was just past 7:00 a.m. on the morning of Saturday, September 13, 2008. Dimon, the chief executive of JP Morgan Chase, the nation’s third-largest bank, had spent part of the prior evening at an emergency, all-hands-on-deck meeting at the Federal Reserve Bank of New York with a dozen of his rival Wall Street CEOs. Their assignment was to come up with a plan to save Lehman Brothers, the nation’s fourth-largest investment bank