But there is support for drone delivery, including at the national organ network, which has faced criticism and a court challenge to make organ disbursement more geographically equitable. There also is waste — about 14% of donated organs are discarded, partially because of reduced quality. Some organs, such as kidneys, can last on ice for a commercial flight across the country. But others, such as hearts, lungs and livers, last less time. A hand or face can wait no more more than a couple of hours.