Loyola has approximately 70,000 living alumni worldwide. Notable Loyola alumni include: Mark Bowden, 1999 National Book Award finalist for Black Hawk Down; Tom Clancy, best selling author of the Jack Ryan series of novels; Michael D. Griffin, former Administrator (highest-ranked official) of NASA; Harry Markopolos, financial investigator who sounded the alarm about the Bernie Madoff ponzi scheme; Jim McKay, former twelve time Emmy-Award-winning host of ABC's Wide World of Sports; Jerry Parr, former Special Agent in Charge Head of the White House Detail for the US Secret Service; and Herbert O'Conor, 51st Governor of Maryland.