Barry Donadio led an honorable career in the Volunteer Ambulance Service, Volunteer Fire Department, the Military, Law Enforcement, and the United States Secret Service.
He was assigned to the White House during the Bush and Obama Administrations. He also served in multiple Middle Eastern war zones during his career. He has over 20 years of public service experience. In 2013, he authored the book " TWA Flight 800 First Responder Witness Account". This is an account describing his actions during the rescue of TWA Flight 800 on July 17th 1996.
In 2014 he was elected to the Queen Anne's County Republican Central Committee in Maryland. He currently serves as President of Public Security LLC, which is a trusted private security and investigation firm licensed in Maryland, New York and the District of Columbia. In January 2017, he was appointed the Sergeant At Arms of the Maryland Republican Party.