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Canadian Major-General S.T. Boyle is deputy commander of Continental U.S. NORAD Region. MGen Boyle attended both Royal Roads Military College and the Royal Military College of Canada, graduating with a BSc. After completing Air Weapons Controller training in North Bay in 1987, MGen Boyle was initially posted as a ground based NORAD Weapons Controller and Weapons Assignment Officer at 22 Wing (North Base).

Subsequent operational postings included employment as a Ballistic Missile Warning System Crew Commander (Thule, Greenland), Space Orbital Analyst and later 21st Space Wing Chief of Standards and Evaluation (Colorado Springs, CO), and Tactical Fighter Controller (Bagotville, QC) from where he deployed twice to Italy for Op DENY FLIGHT. His career operational highlight includes over 2,000 hours flown as Weapons Director and Tactical Director on AWACS aircraft, both the E-3A (Geilenkirchen NATO AB, Germany) and E-3F (Avord AB, France). This included dozens of combat support missions over Kosovo in support of Op ALLIED FORCE, in addition to Op EAGLE ASSIST in the US post 9/11.

MGen Boyle's Command experience includes CO 42 Rdr Sqn (Cold Lake), CO 21 AC&W Sqn (North Bay), ISAF Det CO (split time between AFCENT CAOC, Al Udeid AB, Qatar & ISAF HQ, Kabul, Afghanistan), NORAD Canadian Air Defence Sector (CADS) and 22 Wing Comd (North Bay), ATF-I Comd (Ahmad al-Jaber AB, Kuwait), and Deputy Commander 1 Canadian Air Division/Canadian NORAD Region HQ (Winnipeg). Additional operational experience includes: Op CYMBAL, Op CADENCE, Op PODIUM, Op ATHENA, and Op IMPACT (Iraq and Syria). His staff experience includes: CAOC Director at 1 CAD/CANR HQ (Winnipeg), Director of Fighter Capability Requirements on the Air Staff  at NDHQ (Ottawa, ON), and Deputy Director General of Continental Defence Policy in ADM(Pol), NDHQ (Ottawa). MGen Boyle was promoted to his current rank in 2022 and posted as Deputy Commander, Continental U.S. NORAD Region, Tyndall AFB, Fla.

A qualified military parachutist, MGen Boyle is a graduate of CF Staff School, Fighter Weapons Instructors Course, Joint command and Staff College, USAF Air War College, and he holds a Masters degree of Information Systems Management and a Masters degree of Defence Studies. He is currently a PhD candidate of Organizational Leadership and Information Systems Technology.

MGen Boyle is a private pilot, avid downhill skier & racer, and rescue qualified SCUBA diver. He enjoys extreme sports including paragliding and distance challenges, completing the "SainteLyon" 65 km overnight cross country run (France) and the "Styrkeproeven" 540km non-stop bike race (Norway), in addition to 13 marathons in 9 countries.