London Police Boss Locked Doors and Watched Westminster Attack Unfold From Car Window

Sir Craig Mackey, now Deputy Commissioner under Cressida Dick, had been on his way out of the Palace of Westminster following a meeting with Brandon Lewis MP — now Chairman of the Conservative Party, then Minister of State for Policing — when Khalid Masood mowed down pedestrians near the iconic building and then attacked police officer Keith Palmer with two carving knives.