Captain Grieco graduated from the United States Naval Academy in 1986 earning a Bachelor of Science degree in Political Science. He completed aviation training and was designated a Naval Flight Officer in December 1987.

After initial qualification in the S-3A Viking in December 1988, he was assigned to Air Anti-Submarine Squadron TWENTY TWO (VS-22). While assigned to the CHECKMATES, he transitioned to the S-3B and deployed aboard USS JOHN F KENNEDY (CV 67) participating in Operation DESERT SHIELD and flew 23 combat support missions in Operation DESERT STORM.

Upon completion of his first sea tour, Captain Grieco was assigned to Fleet Replacement Squadron TWENTY SEVEN (VS-27) as an instructor. During this tour, he held the lead instructor for Electronic Warfare Training of the S-3 community and was the east coast S-3 NATOPS senior evaluator and model manager.

Captain Grieco’s next assignment was to Commander Carrier Group FOUR as his Flag Lieutenant. During this tour he participated in the intermediate and advanced training of five Carrier Battle Groups as well as participated in NATO exercise STRONG RESOLVE 95.

Upon detaching from CCG-4 in Oct 1996, he reported to Sea Control Squadron TWENTY FOUR (VS-24). While attached to the SCOUTS, he deployed aboard USS JOHN F KENNEDY (CV 67) to the Mediterranean Sea and Arabian Gulf in support of Operations ENDURING FREEDOM and SOUTHERN WATCH.

After attending Naval War College, in April 2000 Captain Grieco was assigned to the Chairman of the Joint Chiefs of Staff in the National Military Command Center as the Assistant Deputy Director for Operations on Operations Team THREE.

Selected for command, his next assignment was as Executive Officer of Sea Control Squadron TWENTY FOUR (VS-24). He assumed command of the SCOUTS in April of 2005 and as Commanding Officer, he deployed the squadron aboard USS THEODORE ROOSEVELT (CVN-71) for Operation IRAQI FREEDOM. During his command tour, the squadron flew 229 overland combat sorties supporting Multi-National Division Southeast, won the CVW-8 Golden Wrench, CNAL Golden Anchor and 2005 Battle “E.”

Upon detaching from the SCOUTS, Captain Grieco was assigned as the Executive Assistant to Commander Naval Air Force, U.S. Atlantic Fleet where he was selected for Major Command and Aviation Nuclear Pipeline training. Upon completion of training, he reported to USS GEORGE WASHINGTON (CVN-73), forward deployed to Yokosuka Japan, as the Executive Officer from Dec 2008 to Oct 2010.

Captain Grieco's next assignment was as Commanding Officer USS BLUE RIDGE (LCC-19), the 7th FLEET Command Ship from May 2011 to July 2012. While in command, he sailed BLUE RIDGE more than 30,000 miles visiting 18 ports in 12 different countries in support of 7th FLEET Commander.