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His afloat tours include serving as Commanding Officer aboard USCGC KATMAI BAY and Executive Officer aboard USCGC BISCAYNE BAY conducting icebreaking operations in the Great Lakes, and Operations Officer aboard USCGC RED BIRCH executing Aids to Navigation missions in the Mid-Atlantic. Operationally, he served as Deputy Sector Commander of Sector Northern New England in directing mission execution in Maine, New Hampshire, Vermont, and Northeastern New York. He also led the Officer Personnel Management (OPM) division at the Personnel Service Center where he directed career actions for the service’s 9000 officers. He previously served as the Executive Assistant to the 25th Commandant of the Coast Guard and Executive Director for the Deputy Commandant for Mission Support (DCMS). His prior flag assignment was as the Assistant Commandant for Capability (CG-7), with responsibilities for staffing, training, equipping, sustaining, maintaining, and employing Coast Guard forces to meet mission requirements. He is responsible for conducting operations and delivering effects in and through the cyberspace operational domain. Rear Admiral Mike Ryan assumed the duties of Commander, Coast Guard Cyber Command located in Washington D.C in July 2019.
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