RFS crews engage in property protection of a number of homes along the Old Hume Highway as the Green Wattle Creek Fire threatens a number of communities in the southwest of Sydney

Rural Fire Service (RFS) crews engage in property protection of a number of homes along the Old Hume Highway near the town of Tahmoor as the Green Wattle Creek Fire threatens a number of communities in the southwest of Sydney, Australia, December 19, 2019. AAP Image/Dean Lewins/via REUTERS ATTENTION...