There are reports that former NASA Flight Director Glynn Lunney passed away earlier today...
For those that go: "who"?, NASA Bio below...
Glynn Lunney began his aerospace career as a co-op student at National Advisory Committee for Aeronautics (NACA) Lewis Research Center. He transferred to Langley and became part of the group of thirty five which formed the Space Task Group Flight Dynamics Office.Later he moved to the National Aeronautics and Space Administration (NASA) Johnson Space Center in Houston, Texas. He served in the Mission Control Center as a flight dynamics officer on Mercury, and flight director on Gemini and Apollo (most notably a key flight director on Apollo 13). He was Chief of the Flight Director's Office.
Lunney was the U.S. Technical Director for Apollo-Soyuz in the US and Russia joint space mission of I975. He led the Shuttle Integration program and served as Program Manager for the Space Shuttle.
In I985, he joined Rockwell and was the General Manager of the Satellite Systems Div. (built GPS satellites). He was Vice President and General Manager of Rockwell International/Seal Beach facility. He was Vice President of Downey-Rockwell and then President of Rockwell Space Operations in Houston.
Prior to his retirement, he managed the Space Shuttle Operations for USA, a joint venture of Lockheed and Rockwell [Boeing].
He was honored with numerous awards including NASA Distinguished Service Medals, Exceptional Service Medals, and the Medal of Freedom awarded to the Mission Control Team for Apollo 13.
With regard to Apollo 13, he and his "Black flight" team replaced Gene Krantz and the White Team about an hour after the Oxygen tank explosion and in the main it was Lunney and his team, not Krantz's, that managed the power up and crew transition PDQ to the LM, juggling fast dwindling resources in the process.. a fact that unfortunately got glossed over/ignored in the Apollo 13 movie, probably for editorial or production reasons.
https://en.wikipedia.org/wiki/Glynn_Lunney