In the event where panic ensues, whether internally or externally, do your very best to remain aware. When reality suddenly changes from stability to chaos, respond first by awareness of your surroundings and then acknowledging your breath.
Practice panic and anxiety management often by suddenly becoming aware of your surroundings and then paying attention to your breath. This will create the habit of internal and external awareness. This is necessary to remain calm, grounded and peaceful during the storm, literally and metaphorically speaking.