What does it take to build a $5.7 billion Fortune 500 company? How do entrepreneurial leaders become successful? Even legendary? Ever Vigilant, Leadership and Legacy by the Executive Chairman of CACI, is a powerful story about the transformation of a kid from rural Oklahoma roots, who graduated from the U.S. Naval Academy, became a Naval Aviator and then grew a $5.7 billion Fortune 500 company employing over 23,000 people in 155 offices worldwide. As a pioneer in the government contracting industry, London built a small consulting company into a multinational information technology company to support some of the most important and critical national security priorities in America. As a leading expert on business ethics, London tells readers what attributes contributed to his enduring success.