Chicago's Police Department is investigating an officer's use of a Taser last month on an 82-year-old woman who was swinging a hammer when police arrived. Officials with the city's Department on Aging went to Lillian Fletcher's home Oct. 29 to make a welfare check, and called police when they saw Fletcher in a window swinging a hammer back and forth, police spokeswoman Monique Bond said Tuesday. Officers arrived and in an attempt to subdue Fletcher one of them used their Taser, Bond said. The department is trying to determine if the officer violated department policy regarding the use of stun...