Soldiers take part in a surprise operation in the Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. Troops have been sent to Rio due to the increase of the violence, and in an attempt to help restore order, but so far have had little impact. The operation on Thursday took place three weeks ahead of Carnival, when thousands of tourists are expected to arrive in the city. (Photo by Leo Correa/AP Photo)





A soldier walks past people sleeping on the sidewalk as he takes part in a surprise operation in the Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





A soldier stands guard during a surprise operation in the Manguinhos slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





Soldiers take part in a surprise operation in Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





A woman stands in a doorway smoking a cigarette as soldiers take part in a surprise operation in the Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





Soldiers take part in a surprise operation in the Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





Soldiers remove a barricade during a surprise operation in Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





A line of soldiers file past residents during a surprise operation in the Manguinhos slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





A soldier stands on top of an armored vehicle during a surprise operation in the Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





Soldiers patrol next to the railway lines during a surprise operation in the Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





Children play in an outdoor shower as a soldier takes part in a surprise operation in the Manguinhos slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)





Soldiers patrol on a street littered with trash in a surprise operation in the Jacarezinho slum in Rio de Janeiro, Brazil, Thursday, January 18, 2018. (Photo by Leo Correa/AP Photo)