Kenneth L Wainstein
Former Assistant to the President for Homeland Security and Counterterrorism, The White House; former Assistant Attorney General for National Security, Department of Justice
Tom Bossert
Former Homeland Security Adviser to Trump, advised Bush on counterterrorism
Tom Ridge
Lobbyist; Secretary of Homeland Security under George W Bush; former US Representative from Pennsylvania
John E McLaughlin
Briefly CIA director under George W Bush
Nick Warner
Former Australian diplomat, intelligence official, public servant | Former Director-General of the Australian Office of National Intelligence
Stanley McChrystal
Founder & Managing Partner of the McChrystal Group
Michael G Vickers
A former special-forces officer and CIA operative, Vickers is best known for his role arming the Afghan resistance fighters against the Soviet army in 1980s Afghanistan
Robert John Sawers
Former Chief of the British Secret Intelligence Service (MI6)
Keith B Alexander
Former commander, USCYBERCOM; Director, National Security Agency