Giambastiani's operational assignments included several in which he was responsible for both demanding at-sea operations and the development of new technologies and experimental processes. Early sea assignments included USS Puffer (SSN-652) and the USS Francis Scott Key (SSBN-657)'s blue crew. While assigned to USS Puffer, he was a 1973 winner of the Fleet Commander's Junior Officer Submarine Shiphandling Competition. He commanded the NR-1 Deep Submergence Craft, the Navy's only nuclear powered deep diving ocean engineering and research submarine and USS Richard B. Russell, where the crew was awarded three consecutive Battle Efficiency "E"s, three Navy Unit Commendations, and two Fleet Commander Silver Anchors for excellence in enlisted retention.
Giambastiani also led Submarine Development Squadron Twelve, an operational submarine squadron that also serves as the Navy's Warfare Center of Excellence for submarine doctrine and tactics. Established in 1949, Submarine Development Squadron Twelve is the oldest experimental unit of its kind in the U.S. military. He served as the first director of strategy and concepts at the Naval Doctrine Command, as well as Commander, Atlantic Fleet Submarine Force; Commander, Submarines Allied Command Atlantic; and Commander, Anti-Submarine and Reconnaissance Forces Atlantic in Norfolk, Virginia.
Giambastiani's other shore and staff assignments include duties as an enlisted program manager at the Navy Recruiting Command Headquarters, Washington, D.C., in the early days of the all volunteer force; Special Assistant to the Deputy Director for Intelligence, Central Intelligence Agency; and, a fellowship with the Chief of Naval Operations' Strategic Studies Group. As a flag officer, he served as the Deputy Chief of Staff for Resources, Warfare Requirements and Assessments for the Commander, United States Pacific Fleet; Director of Submarine Warfare for the Chief of Naval Operations; Deputy Chief of Naval Operations for Resources, Requirements, and Assessments; and as the Senior Military Assistant to Secretary of DefenseDonald H. Rumsfeld. His previous assignment was as NATO's first Supreme Allied Commander Transformation (SACT) and as Combatant Commander of United States Joint Forces Command, where he led the transformation of NATO and U.S. military forces, capabilities and doctrines and the introduction of new technologies, from October 2, 2002, to August 1, 2005.[3]
In 2003, in his capacity as Commander, United States Joint Forces Command, Giambastiani published a "lessons learned" report.[4] While generally praising U.S. performance it highlighted numerous incidents of friendly fire.
As Vice Chairman, Giambastiani chaired the Joint Requirements Oversight Council, co-chaired the Defense Acquisition Board, and served as a member of the National Security Council Deputies Committee, the Nuclear Weapons Council and the Missile Defense Executive Board. In addition, he worked with the Deputy Secretary of Defense Gordon R. England as Co-Chair of the Deputies Advisory Working Group, which oversees implementation of the 2006 Quadrennial Defense Review and other high level Departmental business issues.
On May 4–6, 2007, Giambastiani visited Tunisia, meeting with high-ranking military and civilian officials, including his Tunisian counterparts and Tunisian Foreign Minister Abdelwaheb Abdallah and Defense Minister Kamel Morjane. He went to the North Africa American Cemetery and Memorial on the outskirts of Tunis to pay his respects to fallen U.S. soldiers who had died there during the Tunisia campaign of World War II.
On June 1, 2007, Giambastiani announced his retirement from the military to spend more time with his family and pursue other ventures.[5] He retired on July 27, 2007.[6]
On October 8, 2009, airplane maker Boeing Co. announced that Giambastiani had been elected to its board of directors, effective immediately. The Seattle Times reported that "In a statement, Boeing chairman and chief executive Jim McNerney indicated that the addition of Giambastiani, who was the second-highest ranking officer in the U.S. military, is intended [...] to boost Boeing's influence with the Pentagon."[7]
^"hU.S. war review: Unprecedented coordination, but costly failures". USA Today. 2003-10-02. Archived from the original on 2022-06-11. Retrieved 2011-10-15. Too little was done to minimize incidents of "friendly fire," or inadvertent attacks by U.S. forces on U.S. or coalition troops, according to Adm. Edmund P. Giambastiani Jr., chief of Joint Forces Command, which compiled the war review, known as a "lessons learned" report.
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