Salvation Army Lt. Matt Cunningham went to the roof of Slack Auto Parts on Monday morning planning to stay as long as it took to raise $10,000, and came down Tuesday afternoon with his mission accomplished.“I thought I was going to be up there for a week,” Cunningham said. “In the morning, it just hit like hot cakes.”The Gainesville Salvation Army office hopes to help more than 700 families for Christmas, but its traditional Kettle Drive is five days shorter this year. The office serves Hall, Forsyth, Dawson, Lumpkin, Banks and Barrow counties.