Three current and former Sun Country Airlines employees will discuss their new book about the Minnesota carrier Thursday, Sept. 3, at the Wings of the North Air Museum in Eden Prairie. The free presentation begins at 6:30 p.m. and is part of the museum’s monthly speaker series. Doors open at 6 p.m., and reservations are not required. The museum identifies the authors as flight attendants Jennifer Gasperini and Maggie Hill and corporate staff mem…