Union artillery ceaselessly shells Atlanta while weary residents seek shelter underground. It is the third week of Sherman's bombardment of Atlanta. Union artillery rains shells on the city at an alarming rate: 6-10 a minute for hours on end. The terror of bursting shells drives residents to bombproof structures, even underground, for refuge. Young Lucy Caldwell finds sanctuary in a pit dug six feet deep in her neighbor's yard. An estimated 100,000 shells are fired over 37 days.