A firefighter and a former forestry worker were arrested Friday for allegedly setting multiple fires that converged and killed 137 in Valparaiso, Chile, on Feb. 3. The two unnamed suspects allegedly set several fires that burned at the same time, with wind and hot temperatures fanning the flames and causing them to spread rapidly. The fire also affected more than 16,000 and was Chile's deadliest fire and second-deadliest natural disaster ...