Marc is casting Psychic Shriek: (1d100)[78] vs TN 90
It's range is 20 meters (10 base + 10 from overbleed), I think the other 3 were within 10-20 meters.
All four have to make willpower rolls or take 5 levels of fatigue. If they take more fatigue levels than they have toughness bonus then they are knocked unconscious for 10 minus their toughness bonus in minutes.