Helicopter noise seems to be your big issue Jay, compared to the traffic noise it is insignificant but you can't hear that because it is constantly there and your brain accepts it as the norm.
Perhaps NPAS could waste some more time and money by hovering over your house 24/7 - after a few days you just wouldn't notice it
BTW, 30 years ago we only had the IRA to deal with and life was much simpler.