How many of the 18 U.S. intelligence agencies are part of the Defense Intelligence Enterprise?

The correct answer is based on understanding the components of the Defense Intelligence Enterprise (DIE). This enterprise consists of organizations that primarily support defense-related missions and objectives, focusing on intelligence related to military operations, threat assessments, and operational planning.

Among the 18 U.S. intelligence agencies, 9 are directly part of the Defense Intelligence Enterprise. These agencies include the Defense Intelligence Agency (DIA) and several military service intelligence organizations, such as those from the Army, Navy, Air Force, and Marine Corps. Each of these plays a critical role in gathering, analyzing, and disseminating intelligence that informs national defense strategies and military operations.

Recognizing the specific roles of the other agencies helps clarify why they are not included in the DIE. Many intelligence agencies focus on broader national security issues, diplomatic intelligence, or domestic law enforcement rather than exclusively on defense. Thus, a clear understanding of the distinction between the various agencies and their primary missions underlines why 9 is the correct number for those within the Defense Intelligence Enterprise.