Web Link      Society of American Military Engineers The Society of American Military Engineers promotes and facilitates engineering support for national security by developing and enhancing relationships and competencies among uniformed services, public and private sector engineers, and related profes      ASFE ASFE is a not-for-profit trade association of Member Firms that specialize in earth engineering and related applied science services.      American Society of Testing and Materials The ASTM is an open forum for the development of high-quality, market relevant international standards used around the globe.      American Association of State Highway Transportation Officials AASHTOs goal must be to make the system work better, safer, and smarter, to both save lives and save time for our citizens.      Iowa Groundwater Association The Iowa Groundwater Association is organized for scientific and professional study of groundwater hydrology.