Isaiah J. Baker, Chambersburg, has been charged with one count of criminal attempt of homicide, two counts of aggravated assault; and one count each of discharging a firearm into an occupied structure, possessing instruments of a crime, loitering and prowling at night, recklessly endangering another person and person not to possess firearms after an incident occurred on March 17 at 2:58 a.m. on S. Potomac Street.