CIKR - Transmission Line Failure Tabletop ExerciseCIKR Tabletop Exercise Description Just like a pipeline, a transmission line speeds up services quickly and economically. Occasionally that service is disrupted, creating an emergency situation. Our Critical Infrastructure Key Resource scenario is designed to assist in the evaluation of plans and to get multiple agencies to work together. Who Can Benefit From This Transmission Line Failure Tabletop Exercise? Local Emergency Services Local Government