Vehicles wait for inspection at the Border Patrol's Laredo North vehicle checkpoint in Laredo, Texas. A border agent killed an immigrant woman in Rio Bravo, near Laredo on Wednesday. The shooting is being investigated by the Texas Rangers and the FBI.
In order to reduce shootings, all Border Patrol agents are now required to train in a simulated environment complete with immigrants threatening rocks. Agent Aaron Sims trains on the simulator at the CBP National Training Center in Harper's Ferry, W.V.