...why not PM me with a concession and your C130 experience as a pilot, FE, mechanic and inspector at depot level as I requested.
Why, are you hiring?
I think not.
I already have a job, thanks.
May be the C130 you saw and heard was not using low speed ground idle.
All our airplanes used the T56-9's, which didn't have low ground idle. It's distinctive sound when powering down from flight idle. Otherwise, the herc makes it's own very distinctive sound on the ground and in flight.