Mark Bertolini is a highly experienced army veteran and a key player in national security strategy. He holds a Master of Science in National Security Strategy, a Master of Arts in Foreign Area Studies, and a Bachelor of Arts in Political Science. Bertolini is a former Chief of Staff at both the Chief of Staff 5th Army/US Army North and the Military District of Washington/Joint Force Headquarters National Capital Region. He served as a Deputy Commander at NATO Regional Command-West, and as a Brigade Commander at 162d Infantry Brigade. Bertolini's expertise as an Armor Branch Chief at the Human Resources Command and former Battalion Commander at 3-67 Armor Battalion make him a much sought-after mentor for junior military officers.