Sargent v. Commonwealth – United States District Court – Middle District of Pennsylvania – October 26th, 2015 – This case involves an alleged use of excessive force by an arresting policeman. The plaintiff hired R. Paul McCauley, a deadly/excessive force expert witnesses. The defendant challenged Dr. McCauley should not be allowed to testify on the following: 1) whether the force used was excessive or unreasonable and 2) whether defendant could have done under the circumstances. The judge granted the motion in part and denied it in part, stating that Dr. McCauley’s testimony is limited to the extent that it references the reasonableness or excessiveness of the force used.