The only time I was annoyed by Herc noise was when one of the AC130's was orbiting Watton airfield from first dark to about 0300 one morning. Couldn't sleep, but never had that trouble at Lyneham even when engine running on the Calne strip!
Could go to sleep if it started, never woke me up and the sound of the Hercs on Watton airfield brought several bursts of nostalgia.
Shame it's been declared surplus now, no more HALOs, no more Hercs that I felt I could just reach out and touch just in front of my house when downwind, just plain no more.
Dunno what they're complaining about, i found the sound comforting in a strange way.
Doc C
PS, never made complaint about the AC130 because I had an idea what it was practising for and troops covered/lives saved are well worth a couple of lost nights sleep.