The week ahead is characterized by public talks by Fed Officials. Fed Head Janet Yellen provides testimony to the Joint Economic Committee and the Senate Budget Committee. Some 30,000 people attended Berkshire Hathaway’s annual shareholders meeting in Omaha, a Warren Buffett celebrity event that had circus-like atmosphere. House Speaker John Boehner is said to be close to forming a select committee to investigate the 2012 Benghazi incident. My prediction…