Arin: He will sense it before it even happens. He will grab your hands and make you face him, taking your mind to focus on him, and him only. His thumbs will trace circles on your knuckles until you calm down.
Danny: He will rub your back slowly, making sure he's not crowding you so it doesn't get worse. He will whisper you that everything is okay, and that you're fine.
Barry: He will get overprotective, and make sure no one, is near you. He'll pull you into a Bear hug, and hold you close, never letting go.