CMC Slabinski’s operational assignments include SEAL Team FOUR, 1990 to 1993; Naval Special Warfare Development Group (NSWDG), 1993 to 2006; and Command Master Chief of Naval Special Warfare Tactical Development and Evaluation Squadron TWO, 2006 to 2008. He was the Senior Enlisted Advisor of the Joint Special Operations Command, Washington, DC Office, 2008 to 2010 and Command Master Chief, Naval Special Warfare Group TWO, 2010 to 2012

Slabinski has completed nine overseas deployments and 15 combat deployments in support of the Global War on Terrorism, including Operations Enduring Freedom and Iraqi Freedom. He retired in June 2014 as the Director of Naval Special Warfare Safety Assurance and Analysis Program after more than 25 years of service.