Gabriel David Borges Dantas, left, who had a liver transplant, and Arlindo Artur Oliveira Matias, center, who had a heart transplant, get a visit from Santa Claus, played by actor Caio Basilio Costa, during a Christmas party for children who have had organ transplants, at the Rodrigo de Freitas lagoon air base in Rio de Janeiro, Brazil, Monday, Dec. 2023. The air base is used by helicopters for the transportation of organs. (AP Photo/Bruna Prado)