James Carville hauls his son Emery uphill on their homemade zip line Tuesday afternoon in their backyard in Lisbon.  His other son, Everett, tests his balance on a teetering canoe after they got bored playing in their treehouse. Carville quit his job at Bath Iron Works when COVID-19 complicated life. A licensed arborist, he started a business so he could set his own hours, spend more time with family and enjoy school vacation week with them. Russ Dillingham/Sun Journal Buy this Photo