I am there with you man....
Dictionary.com defines courage as:
the quality of mind or spirit that enables a person to face difficulty, danger, pain, etc., without fear; bravery.
When the tactic is to shoot a person, then press a button and have explosives rip you apart faster than your body can even recognize or register pain .... what courage is in that?
If you want me to believe the assassin had courage. Let him take his shots and then surrender to the crowd/authorities. Taking the bomb option is to specifically avoid pain, suffering, difficulty etc.