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Commander, Navy Installations Command
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Exercise Reliant 21

Naval Station Great Lakes Police, Fire, and Emergency Services run the incident command post.

09/15/21 10:03 AM

GREAT LAKES, Ill. – Naval Station Great Lakes is sponsoring a full-scale, multi-agency exercise next week. This exercise will provide participants with an opportunity to assess capabilities, plans, policies, and procedures. It will focus on decision-making, coordination, and integration with other jurisdictions/organizations during an active threat scenario. The expected outcome of the exercise is successful integration of, and communication with, first responders throughout the Lake and Cook County area.

Reliant Great Lakes 2021, which is scheduled to take place September 21, is designed to enhance the readiness of U.S. Navy first responders and ensure seamless interoperability among Navy commands, other services and agency partners.

The exercise uses realistic scenarios to ensure U.S. Navy security forces maintain a high level of readiness to respond to changing and dynamic threats.

Measures have been taken to minimize disruptions within local communities and to normal base operations, but there may be times when the exercise causes increased traffic around Great Lakes or delays in base access. Area residents may also see or hear security activities associated with the exercise. Advanced coordination has taken place with local law enforcement and first responders.

Reliant Great Lakes 2021 is not in response to any specific threat, but is a regularly scheduled exercise.

The following agencies and organizations will participate in the exercise:

•     Naval Station Great Lakes (all stakeholders)

•     Navy Region Mid-Atlantic Regional Dispatch Center

•     Naval Criminal Investigative Service

•     FBI (various components)

•     ATF

•     Waukegan Explosive Ordnance Disposal

•     Lake County Coroner

•     North Chicago Police

•     Lake Bluff Police

•     Lake Forest Police

•     Highland Park Police

•     Vernon Hills Police

•     Mundelein Police

•     Zion Police

•     Illinois Law Enforcement Alarm System (ILEAS)

•     Mutual Aid Box Alarm System (MABAS)

•     Northwest Illinois Incident Support Team (NIST)

•     Illinois State police

•     Northwestern Medicine (patient Disbursement)

•     Lake County EMA

•     Lincolnshire Police

•     Grayslake Police

•     Waukegan Rescue Task Force

•     Waukegan Police

•     North Chicago EMS

•     Libertyville EMS

•     Countryside EMS

•     Gurnee EMS


For updates during the exercise, visit the base’s Facebook account at, and the base’s Twitter account at

Press inquiries should be directed to 847-688-2430, ext. 359 or by email


Opened in 1911, Naval Station Great Lakes is the Navy’s largest training installation and the home of the Navy’s only Boot Camp. Located on over 1,600 acres overlooking Lake Michigan, the installation includes 1,153 buildings with 39 on the National Register of Historic Places. NSGL supports over 50 tenant commands and elements as well as over 20,000 Sailors, Marines, Soldiers, and DoD civilians who live and work on the installation.