Zion Harvey, front right, who received a double hand transplant in July 2015, raises his right arm while sitting next to his mother Pattie Ray, left, during a news conference Tuesday, Aug. 23, 2016 at The Children’s Hospital of Philadelphia in Philadelphia. Zion Harvey talked about his progress since receiving a double hand transplant in July 2015, becoming the youngest hand transplant patient in the U.S., and now the boy from the Baltimore suburb of Owings Mills, Md., can throw a ball, zip his clothes and write in his journal. (AP Photo/Dake Kang)