Once a few years ago when the power was out in Flossmoor, Gregg and Kristen Beglau didn’t have any way to warm milk for their baby, Anabella. Their neighbors, Ed and Trish Ladner, offered up their propane grill.“He had a burner on the grill, so we would heat up baby milk on the burner on the grill,” Gregg Beglau said, laughing.The Ladners also loaned them an extra refrigerator when the Beglaus’ broke down and needed to be replaced. They had to keep Anabella’s milk cold that time.It was five years ago when Gregg and . . .