Police officers Jose Vallejos and Rodrigo Fuentealba train golden retriever sniffing dogs 'Clifford' and 'Coffee' at the training site for sniffing dogs of the Chilean police which is developing a training program to detect the coronavirus disease (COVID-19) in highly frequented places in Santiago, Chile July 28, 2020. Picture taken July 28, 2020. REUTERS/Ivan Alvarado