In the opening scene the coyote (person smuggling someone across the border) tells the family he was transporting to "walk northeast about ten miles." The US is one of only three countries (along with Liberia and Myanmar) that don't use the metric system, so they should have mentioned a distance in kilometers given that they're south of the Mexico/US border (as evidenced by the license plate on the truck and their instructions to head northeast towards the border). Since the coyote's truck had Texas license plates he is all probability a U.S. citizen and would be used to telling people distances in miles, not kilometers.
After Amir gets shot in the interrogation room Reese enters in the room to find his dead body and informs Finch that "Fusco has been shot". Clearly it wasn't Fusco who was shot but Amir.