What does Scout notice about Heck Tate and a few other men coming to talk to Atticus? What does this mean to her? ch 15

Scout notes that there are men around she never sees at church, and that never show interest in anything but their own business...... but suddenly they're all around speaking with her father. For Scout, this means something out of the ordinary is going on.

In the interval between Sunday School and Church when the congregation stretched its legs, I saw Atticus standing in the yard with another knot of men. Mr. Heck Tate was present, and wondered if he had seen the light. He never went to church. Even Mr. Underwood was there. Mr. Underwood had no use for any organization but The Maycomb Tribune, of which he was the sole owner, editor, and printer. His days were spent at his linotype, where he refreshed himself occasionally from an ever-present gallon jug of cherry wine. He rarely gathered news; people brought it to him. It was said that he made up every edition of The Maycomb Tribune out of his own head and wrote it down on the linotype. This was believable. Something must have been up to haul Mr. Underwood out.