Throughout the simulation, the clinician and the patient are in constant contact. The patient describes what he sees and feels, relating it back to his wartime experience. The clinician wears a headset and a microphone, not only to hear what the patient hears but also to speak back, booming in from all directions like the voice of God. The clinician also monitors the hallmarks of stress – increased heart rate, breathing, and sweating. “Marines tend to be big tough guys who don’t always want to tell you when something is wrong,” McLay explains. “So we also gather physiological evidence so we can tell when they’re getting keyed up.”
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