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Supporting our Heroes in Headsets: OUC's Executive Team

Arrelle Anderson, Chief of StaffArrelle Anderson, Chief of Staff

Arrelle Anderson began her tenure at the Office of Unified Communications (OUC) in May of 2017. Prior to her current role, she served as the Chief Operating Officer for Clayton County Government in Georgia. In that role, Arrelle led strategic efforts that expanded Atlanta’s rapid transit system into Clayton County. In her current position as the Chief of Staff for OUC her role is key to cultivating partnerships with local and federal agencies like the Metropolitan Police Department (MPD), Fire and Emergency Medical Services (FEMS), DC Department of Transportation (DDOT), DC Homeland Security and Emergency Management Agency (HSEMA), and several other public safety organizations. Arrelle also serves as the thought partner to the Director where she leads strategic planning, government relations, and organizational management efforts.


Dionne Hayes, General CounselDionne Hayes, General Counsel

Dionne Hayes was appointed General Counsel for the OUC in June 2017. As the chief legal officer, Dionne oversees the legal affairs for OUC, coordinating representation for the agency and reviewing matters for legal sufficiency. Prior to joining OUC, she served as an attorney-advisor for the Department of Public Works and as General Counsel and Interim Director for the Department of Youth Rehabilitation Services. She began her career with the District government in 2010 after serving as a senior associate with Blackwell Burke PA in Minnesota, practicing in the areas of commercial litigation, products liability defense, and intellectual property and entertainment law.

Dionne is a Master of Fine Arts candidate in writing at Bennington College. She graduated from the University of Manitoba in Canada with a Bachelor of Arts in Criminology and received her law degree at Hamline University School of Law. She is admitted to the District of Columbia Bar, the Minnesota State Bar, the U.S. District Courts of Minnesota and the Eastern District of Michigan. Dionne currently serves as Board Secretary for the Hurston/Wright Foundation and is the former literary ambassador for the Read Across Jamaica Foundation.

Teddy Kavaleri, Chief Information OfficerTeddy Kavaleri, Chief Information Officer

Teddy Kavaleri has been employed by the OUC since 2005, and currently serves as the agency’s Chief Information Officer (CIO). In this role he is responsible for the agency’s systems and applications including 911 and 311 telecommunications, the 311 CRM, the 911 Operation’s computer aided dispatch (CAD), and the radio systems. These systems process over 3 million 911 and 311 calls and over 10 million radio transmissions annually. Teddy received his B.S. in Electrical Engineering from Virginia Tech and a Master of Science degree from George Washington University in Engineering and Technology Management. He is a technical expert with over 20 years’ experience in wireless communications, large-scale IT systems and applications in public safety and public service systems.

Yvonne McManus, Chief Administrative Officer Yvonne McManus, Chief Administrative Officer (In Memoriam)

Tuesday, November 10, 2020: It is with immense sadness that the Office of Unified Communications (OUC) announces the passing of our cherished team member Yvonne McManus. Yvonne departed this life following a lengthy illness and after more than 19-years of dedicated and noble service to the Government of the District of Columbia.

Yvonne joined the OUC in January 2007, serving as the Deputy Director for 311 Operations. As Deputy Director, Yvonne implemented and managed the 311 Operation. Currently, she serves as the agency’s Chief Administrative Officer. In this role she is responsible for Human Resources and Payroll Management.

Cleo Subido, Chief of Professional Standards and DevelopmentCleo Subido, Chief of Professional Standards and Development

Cleo Subido joined the OUC in January 2020 serving as the Chief of Professional Standards and Development. She brings many years of public safety communications experience; serving as both a Dispatcher and Training Manager with the Seattle, Washington Police Department. Cleo spent the next 18 years as the Manager of Criteria-Based Dispatch (CBD) for Seattle and King County Public Health. She completed the Master Trainer program with FEMA and continues to be a life-long learner with a passion for quality improvement through emergency preparedness training. In her role as the Chief of Professional Standards and Development, Cleo will oversee the development and conveyance of job specific training for the Operations staff and will lead the Quality Assurance division; measuring performance and improving service delivery standards.

LaJuan Sullivan, Chief of 911 OperationsLaJuan Sullivan, Chief of 911 Operations

LaJuan Sullivan joined the OUC in May 1994, and currently serves as the 911 Chief of Operations overseeing the 911 Operation. She is Center Manager Certified by the National Emergency Number Association (NENA) and a member of the Association of Public Safety Communications (APCO). An experienced public safety professional, she has worked in a variety of public safety communications positions throughout her career. She began on the front line as a Telephone Equipment Operator and a 911 Dispatcher, eventually advancing to Assistant Watch Commander, Watch Commander and 911 Operations Manager. Additionally, she has held supportive roles in the OUC Training Division and with the Executive Management team.

Marcellus Walker Jr., Chief of 311 OperatonsMarcellus Walker Jr., Chief of 311 Operations

Marcellus Walker Jr. joined the Office of Unified Communications (OUC) in January 2008, and currently serves as the 311 Chief of Operations. He brings over twelve years of experience in customer service, employee advocacy, and leadership in the public sector. He is a graduate of DC Government’s Certified Public Manager (CPM) program in partnership with George Washington University and is Center Manager Certified by the National Emergency Number Association (NENA). An experienced 311 professional, he has worked in a variety of positions at OUC throughout his career. He began on the front line as a Customer Service Representative, an Operations Supervisor, eventually advancing to 311 Operations Manager. In his current role as Chief of 311 Operations, Marcellus is responsible for the day to day planning, coordinating , and business development of the 311 Call Center Operation. 311 is the access point for residents and visitors requiring District city services and information.  

Heather McGaffin, Chief of Special Operations and InvestigationsHeather McGaffin, Chief of Special Operations and Investigations

Heather McGaffin joined OUC in October 2020 as the Chief of Special Operations and Investigations. She brings over 20 years of public safety experience with her; working in both the public and private sectors of the 911 industry and as a field responder. Heather has her Emergency Number Professional (ENP) certification through the National Emergency Number Association (NENA) and is a member of the Association of Public Safety Communications Officials International (APCO). Heather received her B.S. in English from Radford University. In her role, Heather will manage highly confidential projects on behalf of the Agency Director, while supporting initiatives that impact core operations.