In late 1972, the Navy experienced its most serious racial uprising aboard the "USS Kitty Hawk" and the "first mass mutiny in the history of the U.S. Navy" on the "USS Constellation". Cortright argues "The resistance of African American members of the military against racism and war was a major factor in the collapse of discipline, morale, and combat effectiveness during the Vietnam War." Essays from black veterans of rebellions and resistance discuss their growing awareness of the connection between racism and the war. Keith Mather, writes about his role in the October 1968 Presidio mutiny at the Presidio stockade in San Francisco, California which was sparked when a prisoner was murdered by a military guard and grew into 27 prisoners sitting down in protest against conditions in the stockade and against the war. Another little discussed aspect of the war is fragging, the deliberate killing or attempted killing by a soldier of a fellow soldier, usually a superior officer or non-commissioned officer (NCO), which Cortright calls the "most horrific indication of the breakdown of the armed forces". He says exact numbers of fraggings are not known but recent studies estimate "600 to 850 or possibly more." He states, "The threat of fragging became a pervasive presence that loomed over many units in Vietnam and fundamentally altered the relationship between commanders and their troops." A witness to one of these fraggings writes, "I asked, 'What’s going on?' This fellow answered, 'They have fragged the "lifer hooch" as a warning because they were getting too gung ho.'"  Chapter 10 contains essays from a POWs, the son of a POW, GI and civilian resisters, and an Army Major who helped end the My Lai Massacre. They each describe how and/or why they (or their father) turned against the war. Bob Chenoweth was a helicopter pilot shot down in Vietnam and captured by the Viet Cong. In the "Hanoi Hilton" POW camp he "learned about Vietnam's history, culture, and people." He saw films of "the Winter Soldier Investigation held in the U.S. by Vietnam Veterans Against the War" and recognized that "GI activists and veterans" were providing "an undeniable voice about what was being done in our name." He spoke out against the war and said of his captors, "These are people from whom I learned a new way of looking at the world, who protected me and sent me home a better person than when I left."