Kevin Vickers is Parliament’s Sergeant-At-Arms, who saved lives by shooting the terrorist. They were just outside the caucus rooms where members of Parliament and PM Harper were meeting.

Here he is, gun in hand, minutes after taking out the shooter:

Wow – video of Sgt. at Arms Kevin Vickers walking in Parliament, weapon in hand, right after he shot the terrorist http://t.co/VkYWC20TLQ

— Laura Walker (@LauraWalkerKC) October 23, 2014