For perishables with a short shelf life, shipping by air—by far the fastest mode of transportation—has become the preferred way to go. And it may be tempting to think that an aircraft's flight time is all shippers need to worry about when it comes to ensuring freshness. But maintaining the proper temperature throughout the shipment's journey, from pickup at origin to delivery at the destination, is the real key to ensuring freshness and quality. Here are five steps shippers can take to help their perishable products maintain temperature integrity and reach consumers in peak condition.