Runway/airfield capacity varies by many factors, the least of which includes operational activity levels, aircraft type/fleet mix, and weather. At large hub airports delay typically impacts facilities such that demand which exceeds capacity can no longer be served. In such instances, airports can lose air service and revenue, not to mention passengers are significantly delayed and air carriers experience much higher operating costs 275 WORDS – Review Addressing Future Capacity Needs in the U.S. Aviation System (pages 12 through 21). • (1) Select two airports from the case studies and compare their existing and projected (future) hourly operations. •(2) Summarize the existing and projected level of aircraft operational activity at each airport throughout the day and generalize how often the airport currently experiences and is projected to exceed capacity. •(3) Summarize how the inability of accommodating demand at these airports is likely to impact the airport and communities in the future. 275 WORDS – Review Addressing Future Capacity Needs in the U.S. Aviation System (pages 22 through 28). •Summarize alternative capacity improvement options for consideration at airports beyond constructing new runways.