SFC Harry L. Ettmueller, USA, was the Chief Engineer at Hue, 1967-68. He was captured by the North Vietnamese during the TET ’68 offensive on February 5, 1968 and remained a POW until March 5, 1973.
I have not been able to find Harry’s obituary, which is what I would normally place here. In lieu of same, here are Bob Morecook’s and John Bagwell’s messages of February 14 & 15, 2020, notifying everyone of Harry’s passing. The are then followed by a number of other messages of condolence.

How Naval Aviator Charles Klusmann escaped a vicious POW camp
Charles Frederic Klusmann was a Naval Aviator born on September 7, 1933, in San Diego, California. He joined the U.S. Naval Reserve on February 23, 1952, and began active service on March 18, 1953. Lieutenant Chuck is known for his extraordinary heroism and achievement for his role in the aerial