As a first lieutenant in the 11th Armored Cavalry Regiment, U.S. Army pilot David Porter was section leader in an Aerial Scout platoon in Vietnam. Their mission was to conduct reconnaissance in OH-6 aircraft (a.k.a. Light Observation Helicopter or "Loach") near the Cambodian border. Finding and engaging the enemy at low altitude in coordination with an AH-1 Cobra gunship circling above, these units developed a remarkable method of fighting the Viet Cong: Hunter-Killer Operations.

The tactic had great local success but died with the war. Few today are aware of the hazards these pilots faced during times of intense combat. Porter's vivid memoir recounts the internal workings of a legendary air cavalry troop, in-the-cockpit combat actions, and the men who were key players on this perilous battleground.