Aircraft designer/patriot R. J. Mitchell, alarmed at growing German militarism, works to perfect a defense against the German Messerschmidt at the cost of his health.Aircraft designer/patriot R. J. Mitchell, alarmed at growing German militarism, works to perfect a defense against the German Messerschmidt at the cost of his health.Aircraft designer/patriot R. J. Mitchell, alarmed at growing German militarism, works to perfect a defense against the German Messerschmidt at the cost of his health.