DETROIT Police are asking for help locating a missing 74-year-old man last seen Saturday morning. According to authorities, Napolean Jackson Jr. was last seen at about 11:30 a.m. in the 3900 block of John R. Street, just north of Mack Avenue. Jackson is 6 feet tall and weighs about 190 pounds. He was last seen wearing a black jacket, black pants and tan and white gym shoes. He is reportedly in good physical condition but his family said he suffers from a medical condition.