Dr. L. Bruce Simpson is an executive vice president for IS4S and former site lead for the Niceville, Florida office. As site lead, he was responsible for approximately 28 personnel and the execution of over $40M in programs. His major interest area was in the demonstration of the efficiency of small, integrated engineering teams as applied to system development and testing. 

Prior to his retirement from DAF, Bruce was a member of the Senior Executive Service, and the executive director at Air Armament Center on Eglin Air Force Base. The center's air armament programs represented the leading edge of weapons technology, including the development of the next generation of precision-guided munitions, air superiority missiles, and range and combat support systems. These programs included the Joint Direct Attack Munition, Joint Air-to-Surface Standoff Missile, Advanced Medium-Range Air-to-Air Missile, High-Speed Anti-Radiation Missile Targeting System, Small Diameter Bomb, Common Range Integrated Instrumentation System, and other programs with total acquisition annual budgets of more than $6B. He led technology transition, acquisition, workforce development, and operations management.  

Bruce has served most of his career at Eglin AFB, including as deputy manager of the Armament Product Group, and director of the Special Projects System Program Office at the Air Armament Center. He served for over three years with the Air Force Research Laboratory at Kirtland AFB as the director of the Directed Energy Directorate. He led 600 personnel and managed a $130M annual budget providing pervasive, world-class directed energy and imaging research and technologies for users across the Air Force and the Department of Defense. He returned to Eglin AFB in 2006 as director of the 308th Armament Systems Wing where he executed a portfolio of programs valued at more than $46B. He was appointed to the Senior Executive Service in 2003.