 A standoff between President Luis Arce and the army leader ensued. Arce has now fired the military commander and installed a new general leader. Troops and armored military vehicles have left the area. Bolivia's deteriorating economy has sparked protests recently, as well as a public rift between leaders of the ruling leftist party. Carrie Khan, NPR News. U.S. futures are flat in after-hours trading on Wall Street. This is NPR News.