WHBM - I am not in the industry, I am in the military. The crews have to be trained in all sorts of disciplines, not just the ones you (who clearly has little idea of what is involved) approve of or see the relevance of.
The support for the military effort in Iraq and Afghanistan by many sections of the British public is deplorable - the poor buggers don't want to be there but they are putting their lives on the line for their country - are you prepared to do that? If not then accept a negligible noise discomfort for very short periods and let those who are not wrapped up in their comfortable little worlds get on with their jobs.