A frigid, blustery wind signals the arrival of another cold front, dramatically dropping afternoon temperatures and sending most north Texans looking for the warm confines of their homes. The erratic Texas weather, though, doesn’t deter two St. Cecilia Catholic School administrators from lacing up their walking shoes and setting out for a brisk trek through the Oak Cliff school’s neighborhood on Jan. 19. That’s because with each step, the two women move closer to their goal.