This involved separating Columbia from the spent S-IVB stage, turning around, and docking with Eagle still attached to the stage.
ðɪs ɪnvˈɑːlvd sˈɛpɚɹˌeɪɾɪŋ kəlˈʌmbiə fɹʌmðə spˈɛnt ˈɛsˌaɪvˌiːbˈiː stˈeɪdʒ, tˈɜːnɪŋ ɚɹˈaʊnd, ænd dˈɑːkɪŋ wɪð ˈiːɡəl stˈɪl ɐtˈætʃt tə ðə stˈeɪdʒ.