In past eras the prenuptial agreement was associated with the wealthy but aging captain of industry who marries his secretary. But these days the prenuptial agreement (or prenup) can serve a broad range of needs for just about any couple. In two income families this can keep the marital arrangement on the straight and narrow. Perhaps there is a large inheritance or assets that the family wants to keep with the inheritor. Here in San Antonio there may need to be specific arrangements for a member of the military in regards to future obligations, although a prenup cannot determine child support.