The incident did not delay the launch of STS-1 less than a month later, but pilot Robert Crippen gave an on-orbit tribute to Bjornstad and Cole. A three-month inquiry determined a combination of a recent change in safety procedures and a miscommunication during the operations were the cause of the accident. A report called "LC-39A Mishap Investigation Board Final Report" was released with the findings. The names of John Bjornstad, Forrest Cole and Nicholas Mullon are engraved on a monument at the US Space Walk of Fame in Florida.