Very sad, and yes - 66 is way too young. I remember watching F-Troop with my late Dad, and every time during the intro to the program, when the wheel would fall off the cannon and they would shoot the watch tower with the soldier leaping to the ground, Dad would just laugh and laugh.
It always amused me, the story of how the script writers for the series first attempted to name the Indian tribe the “Fugawais”, but when the censors realized the punch line to the story about how the tribe got it’s name was “We’re the Fug-aw-wi?” it was quickly edited to “We’re the Heckawis”
Nice politically incorrect TV. Good times.