Also missing was the name of Robert Henry Lawrence Jr., the first black astronaut and a U.S. Air Force officer selected for the Manned Orbiting Laboratory program who was killed in a training accident in 1967.
Juga tidak ada nama Robert Henry Lawrence Jr., astronaut kulit hitam pertama dan perwira U.S. Air Force yang terpilih dalam program Manned Orbiting Laboratory dan tewas dalam kecelakaan latihan tahun 1967. ^ "Sculpture, Fallen Astronaut".