due to conflicting military records of his surname. April 30, 1975 – Fall of Saigon. The U.S. Department of Veterans Affairs uses May 7, 1975, as the official end date for the Vietnam War era as defined by . May 15, 1975 – 18 U.S. servicemen (14 Marines, two Navy corpsmen, and two Air Force crewmen) are killed on the last day of a rescue operation known as the Mayaguez incident with troops from the Khmer Rouge in Cambodia. They are the last servicemen listed on the timeline. Since 1982, over 400 names have been added to the memorial, but not necessarily in chronological order. Some were men who died in Vietnam but were left off the list due to clerical errors. Others died after 1982, and their deaths were determined by the Department of Defense to be the direct result of their Vietnam War service. For those who died during the war, their name is placed in a position that relates to their date of death. For those who died after the war, their name is placed in a position that relates to the date of their injury. Because space is usually not available in the exact right place, names are placed as close to their correct chronological position as possible, but usually not in the exact spot. The order could be corrected as panels are replaced. Furthermore, over 100 names have been identified as misspelled. In some cases, the correction could be done in place. In others, the name had to be chiseled again elsewhere, moving them out of chronological order. Others have remained in place, with the misspelling, at the request of their family. Addition of the Women's Memorial The Women's Memorial was designed by Glenna Goodacre for the women of the United States who served in the Vietnam War. Before Goodacre's design was selected, two design entries had been awarded as co-finalists – one a statue and the other a setting – however, the two designs were unable to be reconciled. Glenna Goodacre's entry received an honorable mention in the contest and she was asked to submit a modified maquette (design model). Goodacre's original design for the Women's Memorial statue included a standing figure of a nurse holding a Vietnamese baby, which although not intended as such, was deemed a political statement, and it was asked that this be removed. She replaced them with a figure