Under the direction of a technical superior, performs skilled and supervisory work in mechanical, electrical, and construction operations. Work involves responsibility for the operation, maintenance and repair of air conditioning and heating systems, electrical, plumbing and/or construction projects for City-Parish buildings or the airfield facilities maintenance. Work includes the training and scheduling of maintenance personnel in the assigned trades. An employee in this class is subject to unusual working hours as well as twenty-four hour call for situations needing immediate attention. General supervision is exercised over several maintenance and operation crews. Performs other work as requested.