The earliest date of eligibility for a name to be included on the memorial is November 1, 1955, which corresponds to President Eisenhower deploying the Military Assistance Advisory Group to train the Army of the Republic of Vietnam. The last date of eligibility is May 15, 1975, which corresponds to the final day of the " Mayaguez" incident. There are circumstances that allow for a name to be added to the memorial, but the death must be directly attributed to a wound received within the combat zone while on active duty. In such cases, the determination is made by the Department of Defense. In these cases, the name is added according to the date of injury—not the date of death. The names are listed in chronological order, starting at the apex on panel 1E on July 8, 1959, moving day by day to the end of the eastern wall at panel 70E, which ended on May 25, 1968, starting again at panel 70W at the end of the western wall which completes the list for May 25, 1968, and returning to the apex at panel 1W in 1975. There are some deaths that predate July 8, 1959, including the death of Richard B. Fitzgibbon Jr. in 1956.