STS-61-M was cancelled after the Space Shuttle Challenger disaster later that month. Ride was appointed to the Rogers Commission, the presidential commission investigating the disaster, and headed its subcommittee on operations. She was the only Space Shuttle astronaut and the only current NASA employee on the commission. After her death in 2012, Major General Donald J. Kutyna revealed that she had discreetly provided him with key information about O-rings, namely, that they become stiff at low temperatures, that eventually led to identification of the cause of the explosion. To protect her source, they then fed this information to Richard Feynman. Ride was even more disturbed by revelations of NASA dysfunctional management decision-making and risk-assessment processes. According to Roger Boisjoly, who was one of the engineers that warned of the technical problems that led to the Challenger disaster, after the entire workforce of Morton-Thiokol shunned him, Ride was the only public figure to show support for him when he went public with his pre-disaster warnings. Ride hugged him publicly to show her support for his efforts. The Rogers Commission submitted its report on June 6, 1986.