Players: The players in this situation are United Airlines, and their pilots. They both have in the power because they both have the ability to cancel flights. Pilots may refuse to fly in the Chicago area due to dangers associated with the winter weather, and United Airlines may cancel flights for the same reason. They both have interest in the situation because regardless of the outcome of the situation, both parties will be affected.
Subjects: The subjects would be the passengers of United Airlines because cancelled flights have a substantial affect on their travel schedules, but they have little control over what impact the winter weather will have on them.
Crowd: The crowd would be the passengers of other airlines. The passengers of other airlines have little power on United Airlines flights. They have a small amount of interest if United Airlines flights are cancelled because that may mean all other flights in Chicago are affected.
Context Setters: The context setters are the airport workers that have control of airport operations and whether the airport is open due to possible snow accumulation, but they do not have as much interest in the outcome as United Airlines or its passengers.