It's a fallacy that U.S. bases abroad generate 'huge' ecomonic returns for the community. The host countries have to foot larger infrastructure costs and other than bars, local merchants don't see much benefit. The military personnel do most of their shopping on the base, yet the taxpayers of the country have to pay for roads, water, sewage, waste disposal, etc.
As an example, when the U.S. military was forced to leave The Philippines about 15 years ago, many argued that it would devaste the local economy. Yet the result was less crime, a cleaner community and a free-trade zone established on the property has improved the local economy far beyond the anticipated return.