Hermon Prep School, graduating in 1986, before entering the United States Naval Academy.

[6][15] Vasely earned a Bachelor of Science degree in general engineering from the Naval Academy in 1990 and received a commission as an ensign in the United States Navy.

Following SEAL Tactical Training (STT) and completion of six month probationary period, Vasely received the 1130 designator as a Naval Special Warfare Officer, entitled to wear the Special Warfare insignia also known as "SEAL Trident".

Vasely returned to Naval Special Warfare Development Group in August 2002 as squadron commander till 2005, completing deployments to Afghanistan during Operation Enduring Freedom.

As a captain, Vasely was assigned as Commander, Naval Special Warfare Group Two where he organized, equipped, deployed, and sustained NSW forces in support of Theater Special Operations Commands in AFRICOM, EUCOM, SOUTHCOM, and CENTCOM.