 There was one fatality and 21 were injured, all from the emergency response team from Little Rock AFB.The explosion blew the 740-ton launch tube cover into the air and left a crater in diameter.The 54 Titan IIs in Arizona, Arkansas, and Kansas were replaced in the U.S. arsenal by 50 MX "Peacekeeper" solid-fuel rocket missiles in the mid-1980s; the last Titan II silo was deactivated in May 1987.