Answer:A convention that allows the rescuers to release their emotions
Explanation:
A convention should be organized such that rescuers lift off their emotion and feel a bit relaxed.
After venting off their emotion helps the rescuers to lighten the trauma which they went throw at the time of the shooting. It will calm their mind and dampen their sadness as struggling through emotion can lead to more suffering.
Rather than suppressing emotion, it is better to let them off from mind.