766–778 POW (652–662 freed/escaped, 114–116 died in captivity) The total number of American personnel who were KIA or died non-hostile deaths, were enlisted personnel with a casualty number of 50,441. The total number of officer casualties, commissioned and warrant, are 7,877. The following is a chart of all casualties, listed by race, and in descending order. The total number of casualties, both KIA and non-hostile deaths, for drafted and volunteer service personnel (figures are approximated): During the Vietnam War, 30% of wounded service members died of their wounds. Around 30–35% of American deaths in the war were non-combat or friendly fire deaths; the largest causes of death in the U.S. armed forces were small arms fire (31.8%), booby traps including mines and frags (27.4%), and aircraft crashes (14.7%). Disproportion of African American casualties African Americans suffered disproportionately high casualty rates in Vietnam. In 1965 alone they comprised 14.1% of total combat deaths, when they only comprised approximately 11% of the total U.S. population in the same year. With the draft increasing due to the troop buildup in South Vietnam, the military significantly lowered its admission standards. In October 1966, Defense Secretary Robert McNamara initiated Project 100,000 which further lowered military standards for 100,000 additional draftees per year. McNamara claimed this program would provide valuable training, skills and opportunity to America's poor—a promise that was never carried out. Many black men who had previously been ineligible could now be drafted, along with many poor and racially intolerant white men from the southern states. This led to increased racial tension in the military. The number of US military personnel in Vietnam jumped from 23,300 in 1965 to 465,600 by the end of 1967. Between October 1966 and June 1969, 246,000 soldiers were recruited through Project 100,000, of whom 41% were black; black people only made up about 11% of the population of the US. Of the 27 million draft-age men between 1964 and 1973, 40% were drafted into military service, and only 10% were actually sent to Vietnam. This group was made up almost entirely of either working-class or rural youth. Black people often made up a disproportionate 25% or more of combat units, while constituting only 12% of the military. 20% of black males were combat soldiers, sailors, airmen and marines. Civil rights leaders, including Martin Luther King Jr., Malcolm X, John Lewis, Muhammad Ali and others, criticized the racial disparity