Errol Julien

Subsystem Technologies Inc. provides information technology services. It specializes in advanced engineering, advanced analytics, management consulting and a range of information technology services including cyber security. The company was founded by Samir Maholtra in 1986 and is headquartered in Arlington, VA.

Optimal Solutions Group LLC provides policy analysis research and consulting services. It offers program and policy evaluation, cost-benefit and effectiveness analyses, custom econometric modeling, and market analyses for decision makers in both the public and private sectors. The firm works for government at the federal, state, and local level and also works with non-profit companies. The company was founded by Mark D. Turner and Tracye Turner in February 2000 and is headquartered in Hyattsville, MD.