This is an issue journalists have raised in the past. With military populations becoming smaller and more isolated over time they are slowly becoming population

This is an issue journalists have raised in the past. With military populations becoming smaller and more isolated over time they are slowly becoming population bubbles outside their local communities. Military populations tend to be a tiny bit more intelligent, better educated, and higher wage earners than the average non-military population in localized areas and amongst the average population of the country as a whole. If the military is selective about who joins and those people do not interface with communities outside the military they are forming isolated more elite populations. So far the difference is statistically negligible both in terms of performance differences and degree of isolation that the subject remains limited to magazine articles.