Actually, Geary, the most powerful lasers are violet and then ultraviolet, which would be invisible. But this for sure isn't laser - these, if you don't know, are perfect straight lines, and can't have an "arrowhead" nor a trail as we see it here.
And if I get their expressions in last panels right... they all just learned what that unlabeled setting at "Explode Wyvern"+1 does...