Staffing shortages caused major disruptions for air travelers last summer. Now air crew unions are pushing back against their bosses and losing patience with customers.   From "no toe nail clipping" to "leave the crying babies alone," we hear advice on how to make everyone’s flight experience better this summer. Our guests are Keturah Johnson, international vice president of the Association of Flight Attendants, and former flight attendant Angie Andrechyn, whose passionate resignation letter from American Airlines went viral.  To learn more about how CNN protects listener privacy, visit cnn.com/privacy