Although most police activities do not involve the use of force, those that do reflect important patterns of interaction between officer and citizen. After a brief survey of prior research, this study presents new data and findings to examine these patterns. The force factor applied and the sequential order of incidents of force is included in the analysis. The authors also examine police use of force from the suspect's perspective, and create a new conceptual framework, the Authority Maintenance Theory, for examining and assessing police use of force.