To Scream, or not to Scream

Does Tyree really Scream? To begin with, the Heroes have the jump on the attacking Lizardmen who are all directing their aggression toward the Blackwall keep and away from the treeline the Heroes are hiding within. If you really want to scream that is fine, but more than one of your companions would advise against it at this particular moment; as you are currently in hiding and surveying the battle.