Neri dos Santos Silva, center, watches an encroaching fire threat after digging trenches to keep the flames from spreading to the farm he works on, in the Nova Santa Helena municipality, in the state of Mato Grosso, Brazil, Friday, Aug. 23, 2019. Under increasing international pressure to contain fires sweeping parts of the Amazon, Brazilian President Jair Bolsonaro on Friday authorized use of the military to battle the massive blazes. (AP Photo/Leo Correa)
{}