Rear Admiral Sibley serves as the Assistant Commandant for Capability, and is responsible for identifying and providing capabilities, competencies, and capacity along with developing standards for the staffing, training, equipping, sustaining, maintaining, and employing Coast Guard forces to meet mission requirements.
During his prior flag assignment, Rear Admiral Sibley served as the Director of Reserve and Military Personnel, responsible for the development and oversight of military personnel policy programs to recruit, manage, shape and support approximately 7,000 Coast Guard Reserve component members and more than 40,000 Active Duty members.
Rear Admiral Sibley is designated a Permanent Cutterman with nearly ten years of service afloat, including command tours of USCGC FORWARD, USCGC POINT THATCHER, and USCGC POINT MONROE. He also served as Executive Officer on USCGC GALLATIN, Operations Officer on USCGC MORGENTHAU, and as a Deck Watch Officer on USCGC SPENCER. While serving as Operations Officer aboard USCGC MORGENTHAU, he deployed to the Arabian Gulf with the U. S. 5th Fleet in support of Operation SOUTHERN WATCH.
Assignments ashore included duty as a Command Center Controller at the Eighth Coast Guard District in New Orleans, Louisiana; Senior Duty Officer in the White House Situation Room; Assignment Officer at the Coast Guard Personnel Command in Arlington, Virginia; Coast Guard Fellow at the Center for Strategic and International Studies (CSIS) in Washington, DC; Military Assistant to the Secretary of Homeland Security; Commander, Coast Guard Sector Lake Michigan in Milwaukee, WI; Deputy Director, Reserve and Military Personnel (CG-13D), Executive Assistant to the Assistant Commandant for Human Resources (CG-1A) ,and Deputy Commander, Coast Guard Personnel Service Center at Coast Guard Headquarters in Washington, DC.
Rear Admiral Sibley is a native of West Islip, NY and a 1989 graduate from the United States Coast Guard Academy, earning a Bachelor of Science Degree in Mathematics and Computer Science. In 2001, he was awarded a Master of Public Administration degree by George Mason University.
Rear Admiral Sibley’s personal awards include three Legions of Merit, Defense Meritorious Service Medal, four Meritorious Service Medals, three Coast Guard Commendation Medals, two Coast Guard Achievement Medals, the Navy Achievement Medal, and the Commandant’s Letter of Commendation.