Across the Capitol campus, architects, engineers and technicians design, enhance and maintain new and historic structures, spaces and building systems. Employees in various trades such as electricians, plumbers, masons and carpenters maintain the facilities and infrastructure in optimal condition. Agency operations are guided and assisted by managerial and professional staff who perform planning, oversight and support functions. The AOC's work requires the expertise of specialists in a wide range of disciplines, including strategic planning, budgeting, information technology, safety, and art and architectural history.