ARMY ACQUISITION PROGRAM LIST DEFINITIONS
A directed, funded effort that is designed to provide a new, improved,
or continuing weapon system or automated information system (AIS)
capability in response to a valid operational need.
Acquisition programs are initiated as a result of a favorable
Milestone I decision. Upon initiation, size and complexity shall
generally categorize acquisition programs. These acquisition categories
ACAT I Programs:
ACAT I programs are Major Defense Acquisition Programs. ACAT I
programs have two sub-categories:
ACAT ID: The Milestone Decision Authority (MDA) is the Under Secretary of Defense (Acquisition and Technology) .
ACAT IC: The MDA is the Army Acquisition Executive (AAE).
ACAT IA Programs: ACAT
IA programs are Major Automated Information Systems (MAISs). ACAT
IA programs have two sub-categories:
ACAT IAM: The MDA is the Office of the Secretary of Defense Chief Information Officer.
The MDA is the Army Chief Information Officer.
ACAT II Programs:
ACAT II programs do not meet the dollar thresholds for an ACAT
I designation, but do meet the criteria for a major system. The
MDA is the AAE.
ACAT III Programs:
ACAT III programs are nonmajor programs that are designated by
the AAE and managed by a PM who reports to a materiel command
or PEO, as designated by the AAE.
ACAT IV Programs:
ACAT IV programs represent all other nonmajor acquisition programs
and are managed by a systems manager within a materiel command
rather than by a PM.
Phase 0: Concept Exploration (CE)
Phase I: Program Definition and Risk Reduction (PDRR)
Phase II: Engineering and Manufacturing Development (EMD)
Phase III: Production, Fielding/Deployment, and Operational Support (PFDOS)