The screeching is more than just a raucous noise. Athrun will find that his aim is slightly off; only one of the Cacaws is struck. The remaining two continue to screech in that piercing tone, and with his proximity, covering his ears just doesn't suffice to completely drown out the noise. The longer Athrun listens, the more he will find himself unable to fight. His vision may go blurry and he may lose his balance. He'd better find a way to block that sound or destroy them before he's incapacitated any further.

The Lethiniums, after their initial shot, are charging up. The gigantic flowers turn skyward briefly as they collect power for their next laser. He has about five seconds before they shoot again.