The Defense Intelligence Agency, or DIA, is an agency within the United States Department of Defense responsible for collecting and analyzing military and defense-related information. There are a few synonyms that can be used for DIA, such as the Department of Defense Intelligence Agency or simply the Defense Intelligence. The agency is tasked with providing timely and accurate intelligence to military and defense officials, including the President of the United States. Other synonyms could include Defense Intelligence Command, Military Intelligence Agency, and Defense Intelligence Service. These terms are often used interchangeably, and refer to the same agency and its mission to ensure national security through intelligence gathering and analysis.