Job openings: The Chicago Police Department has more than 1,100 vacancies on a force of 13,500 officers. Mayor-elect Rahm Emanuel promises to add 1,000 officers to the city's streets.
Public perceptions: In polls, people say crime is getting worse, yet the city is experiencing its lowest crime rates in years.
Tactics: Incoming Superintendent Garry McCarthy tests New York experience against Chicago street gang culture.
Deployment: Political resistance remains strong over shifting police from low-crime to high-crime areas.