GLOSSARY OF TERMS AND ACRONYMS A B C D E F G H I J K L M N O P Q R S T U V W X Y Z D Data Element Dictionary (DED) The Data Element Dictionary (DED) enables users to find specific data elements that are categorized under the following tables: site, action, alias, operable unit and financial. The information contained in DED includes: element name, table name, common name and field definition. Department of Defense (DoD) The Department of Defense (DoD) provides the military forces needed to deter war and to protect the security of the nation. As branches under DoD, the Army, Navy and Air Force are each responsible for the environmental restoration of sites under their control. In addition, the Army Corps of Engineers supports cleanup actions at Superfund sites. Department of Energy (DOE) The Department of Energy (DOE) ensures the nation's energy security, maintains the safety and reliability of the nuclear stockpile, assists in cleaning up the environment from the legacy of the Cold War, and develops energy related innovation in science and technology. Department of Transportation (DOT) The Department of Transportation (DOT) ensures a fast, safe, efficient, accessible and convenient transportation system that meets the country's vital national interests and enhances the American people's quality of life. DOT collaborates with the EPA on such issues as air quality and smog reduction.