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Lieutenant Commander Craig Lensegrav enlisted in the U.S. Navy in May 2000. He graduated from the Nuclear Pipeline as a Machinist Mate Third Class.

His first enlisted tour was aboard USS Abraham Lincoln (CVN 72), where he served from 2001-2005. He reported to Nuclear Power Training Unit – Charleston, S.C. in September 2005 as Moored Training Ship 626 Quality Assurance Nuclear Planner for shutdown availabilities.

In 2008, he graduated from Thomas Edison State University with a Bachelor of Science in Nuclear Engineering. Subsequently, he commissioned into the Surface Warfare Officer community through Officer Candidate School in March 2009. After commissioning, he reported to USS Nassau (LHA 4) in Norfolk, Va. as the ship’s Electrical Division Officer and Combat Information Center Officer. He deployed in support of Operation Unified Response (HA/DR for the earthquake in Haiti). He earned his Surface Warrior Officer pin during this deployment. He was a member of the decommissioning crew in March 2011. In July 2011, he reported to USS Bulkeley (DDG 84) as the ship’s Navigator.

Lt. Cmdr. Lensegrav lateral transferred to the Engineering Duty Officer (EDO) community in 2013.  He earned a Master of Science in Applied Physics from Naval Postgraduate School in June 2015. His qualified as an EDO at SPAWAR (now NAVWAR) Systems Center Atlantic as part of the Fleet Integration Operations Detachment in Norfolk, Va.  During this tour, Lt. Cmdr. Lensegrav served as the On-Sight Installation Coordinator and Project Officer for seven Chief of Naval Operations availabilities, including the first of its kind SWAN-to-CANES upgrade of an amphibious transport dock ship. 

Lt. Cmdr. Lensegrav reported to Program Executive Office Integrated Warfare Systems 1.0, Norfolk, Va. as the Aegis Test Officer for the Aegis Modernization Team – Detachment East in October 2018. He was charged with the modernization of four guided-missile destroyers and cruisers to the newest Aegis Baseline. Lt. Cmdr. Lensegrav served as Executive Officer, Forward Deployed Regional Maintenance Center and Operations Officer from July 2020 to June 2023. 

Lt. Cmdr. Lensegrav has been awarded three Navy Commendation Medal, six Navy Achievement Medals, and various unit and campaign awards.