On January 27, 1967, the day of the Apollo 1 fire, Armstrong was in Washington, DC with Cooper, Gordon, Lovell and Scott Carpenter for the signing of the United Nations Outer Space Treaty.
O 27 de xaneiro de 1967, a data do incendio do Apollo 1, Armstrong estaba en Washington, D.C. con Gordon Cooper, Dick Gordon, Jim Lovell e Scott Carpenter para asinar o Tratado do espazo exterior das Nacións Unidas.