JIC Chairman attending a NATO concert with British intelligence chiefs. Killed by a suicide bomber during Adem Qasim's targeted attack on elite officials.
Warrender is one of the elite officials targeted by Qasim's campaign.
A suicide bomber kills Warrender and other officials at a concert, and Qasim takes credit for the attack.
They are senior officials present at the same security event.
Mace and Warrender attend the concert with British intelligence chiefs and NATO officials.
Both are connected to the British intelligence security apparatus.
Warrender attends a major intelligence security event, while Calum serves among MI5 personnel later targeted by Qasim.
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