Which of the following is NOT one of the five major intelligence disciplines?

Environmental Intelligence (EINT) is not recognized as one of the five major intelligence disciplines in the established framework of intelligence areas. The five major disciplines are Geospatial Intelligence (GEOINT), Human Intelligence (HUMINT), Signals Intelligence (SIGINT), Measurement and Signature Intelligence (MASINT), and Open Source Intelligence (OSINT). Each of these disciplines serves a distinct purpose and method for gathering and analyzing information.

Geospatial Intelligence focuses on imagery and mapping data, Human Intelligence involves information gathered from human sources, Signals Intelligence pertains to intercepting and analyzing electronic signals, and Measurement and Signature Intelligence involves gathering information through technical means, typically for reconnaissance. Environmental Intelligence, while it may encompass important considerations regarding environmental factors, does not fall within the established categories used by intelligence agencies.