Lawrence Livermore National Laboratory


JCATS is a discrete event, constructive simulation that simulates actions and events of people and systems in specified environments. Its interactive design enables operators to initiate and influence events, although outcomes are stochastically determined utilizing user-defined statistical data. JCATS simulates the “effects” of actions and events to simulate combat at the entity level.

JCATS is data-driven, which enables users to rapidly define and refine their scenario parameters to ensure realistic simulation of their specific scenario.

Information Documents

Help Desk Support for JCATS

Supported Versions

JCATS V12.3 Patch 4 (V12.3.4)

JCATS V13.0 Patch 2 (V13.0.2)

JCATS V13.1 Patch 2 (V13.1.2)

Version in Development


How to Get JCATS

DOD Customers

Contact: Thierry P. Grom
JCATS Project Coordinator
Joint Staff J7 (DDJT, EAD)
116 Lakeview Parkway
Suffolk VA 23435-2697
(001) (757) 203-7410; DSN: 668-7410
Fax; (757) 203-7056

US Customers

Contact: Mark Piscotty
JCATS Program Lead
(001) 925-422-2052

International Customers

Contact: Thomas J. Beanland
NH-III, FMS Life Cycle Project Director,
Field OPS Directorate, US Army PEO STRI
(001) 407-384-3538 (DSN 970) Office