Will the third time be the charm? After his first two picks to head the Transportation Security Administration withdrew their nominations after confirmation appeared to be doubtful, President Obama must be relieved that his third choice, John S. Pistole, has accepted. "I am grateful that he has agreed to take on this important role, and I look forward to working with him in the weeks and months ahead," Obama said. Pistole is currently deputy director of the FBI. "The talent and knowledge John has acquired in more than two decades of service with the FBI will make him a valuable asset to our administration's efforts to strengthen the security and screening measures at our airports."