Some men had quit after the opening session on the grinder. Others quit after the run down the beach, and others quit after they sent us into the water. The men who quit then—I believe—were trapped in a cage of fear in their own minds. We woke to the sound of blanks being fired through machine guns. We got wet. We did pushups and flutter kicks. Instructors yelled at us. We ran on the beach. Every man in the class had endured at least this much before, so it could not have been the physical pain that made them quit. No. They lost focus on what they had to do in the moment, and their fear of
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