 Nyora kupfuurira kweiyi ndima - Mushure mekudzokororwa kwekuchengeteka zvichitevera njodzi ye Space Shuttle Challenger, MMU yakarangwa kuva ine ngozi zvikuru nokuda kwokushandiswazve uye yakawanwa kuti mabasa mazhinji akarongwa nokuda kweMMU aigona kuitwa zvinobudirira nemaoko anobata kana kuti EVA dzakarongedzwa dzakarongwa. NASA yakaregawo kushandisa Shuttle nokuda kwezvibvumirano zvokutengeserana zvemasatellite, uye mauto akarega kushandisa Shuttle, achibvisa kushandiswa kukuru kunobvira. Kunyange zvazvo MMU yakafungidzirwa somubetseri womuzvarirwo wokuvaka International Space Station, nokurega kwayo basa, NASA yakagadzira nzira dzakasiyana-siyana dzokufamba muchadenga dzakasungwa. 