Project Apollo was abruptly halted by the Apollo 1 fire on January 27, 1967, in which astronauts Gus Grissom, Ed White, and Roger B. Chaffee died, and the subsequent investigation.
pɹˈɑːdʒɛkt ɐpˈɑːloʊ wʌz ɐbɹˈʌptli hˈɔltᵻd baɪ ðɪ ɐpˈɑːloʊ wˈʌn fˈaɪɚɹ ˌɔn dʒˈænjuːˌɛɹi twˈɛnti sˈɛvən, nˈaɪntiːnhˈʌndɹɪd sˈɪksti sˈɛvən, ɪnwˌɪtʃ ˈæstɹənˌɔːts ɡˈʌs ɡɹˈɪsəm, ˈɛd wˈaɪt, ænd ɹˈɑːdʒɚ bˈiː. tʃˈæfiː dˈaɪd, ænd ðə sˈʌbsᵻkwənt ɪnvˌɛstɪɡˈeɪʃən.