Article Photos: Use of force to be studied in DC police chase 3/12

This 2011 photo provided by Dr. Barry Weiss, from the website of Advanced Periodontics in Hamden, Conn., shows former employee Miriam Carey. The 34-year-old Carey was shot to death by police after a car chase that began when she tried to breach a barrier at the White House. (AP Photo/Advanced Periodontics)