This session, one in a series of ATC topics, addresses the operational environment and functioning of ATC System Command Center (ATCSCC).To draw the entire ATC series together, the webinar closes with an "end to end" flight scenario that starts with airline scheduling and asset management planning, followed by the step by step description of an aircraft flight from the initial receipt of the IFR clearance, through the taxi out, take-off, the TRACON experience, the enroute experience, followed by the arrival TRACON sequencing and, finally, the landing and taxi-in function.