I think you can contact the RAF/Army if its a problem - I quite like the rumble over our house at 1 in the morning - feels like being in an action film!!
The animals don't ever mind the helicopters and Hercules - I think that as they were born here, they have got used to the noise - and the noise arrives first so they know what to expect.
The big round balloon must look like big animals to our animals, so they try to escape