Former NSA and CIA Director, Retired Air Force General Michael Hayden

Former NSA and CIA Director, Retired Air Force General Michael Hayden speaks at a UNT luncheon.

Former CIA and NSA director, Retired Air Force General Michael Hayden, speaks about "A Global Outlook" during a luncheon as part of the University of North Texas Kuehne speaker series on national security at the Hyatt Regency in Dallas, Tuesday, February 4, 2014. Special/Brandon Wade

Former CIA and NSA director, Retired Air Force General Michael Hayden, speaks about "A Global Outlook" during a luncheon as part of the University of North Texas Kuehne speaker series on national security at the Hyatt Regency in Dallas, Tuesday, February 4, 2014. Special/Brandon Wade

Former CIA and NSA director, Retired Air Force General Michael Hayden, speaks about "A Global Outlook" during a luncheon as part of the University of North Texas Kuehne speaker series on national security at the Hyatt Regency in Dallas, Tuesday, February 4, 2014. Special/Brandon Wade

Ross Perot, Sr., left, introduces former CIA and NSA director, Retired Air Force General Michael Hayden, right, during a luncheon titled "A Global Outlook" as part of the University of North Texas Kuehne speaker series on national security at the Hyatt Regency in Dallas, Tuesday, February 4, 2014. Special/Brandon Wade

University of North Texas President Dr. Neal Smatresk speaks during a luncheon titled "A Global Outlook" as part of the University of North Texas Kuehne speaker series on national security at the Hyatt Regency in Dallas, Tuesday, February 4, 2014. Former CIA and NSA director, Retired Air Force General Michael Hayden, was the keynote speaker. Special/Brandon Wade

San Antonio Mayor Julian Castro speaks at the University of North Texas

San Antonio Mayor Julian Castro and his mentor from Stanford, political science professor, Dr. Luis Fraga, speak during the public forum titled “A Conversation on Political Leadership in the Future of American Politics.”

San Antonio Mayor Julian Castro, right, and his mentor and political science professor from Stanford, Dr. Luis Fraga, speak to the media before holding a public forum titled “A Conversation on Political Leadership in the Future of American Politics” at the University of North Texas in Denton, Texas, Wednesday, February 27, 2013. Photo by Brandon Wade

San Antonio Mayor Julian Castro, left, discusses his goals as mayor as his mentor and political science professor from Stanford, Dr. Luis Fraga, listens during a public forum titled “A Conversation on Political Leadership in the Future of American Politics” at the University of North Texas in Denton, Texas, Wednesday, February 27, 2013. Photo by Brandon Wade

San Antonio Mayor Julian Castro, left, discusses his goals as mayor as his mentor and political science professor from Stanford, Dr. Luis Fraga, listens during a public forum titled “A Conversation on Political Leadership in the Future of American Politics” at the University of North Texas in Denton, Texas, Wednesday, February 27, 2013. Photo by Brandon Wade

San Antonio Mayor Julian Castro talks about his goals as mayor during a public forum titled “A Conversation on Political Leadership in the Future of American Politics” at the University of North Texas in Denton, Texas, Wednesday, February 27, 2013. Photo by Brandon Wade