A Soldier from the Wisconsin Army National Guard grades a road along the U.S./Mexico border in the Sonoita District of Arizona Jan. 18. Soldiers are constructing the road to allow U.S. Border Patrol agents better access with quicker response times to...

A Soldier from the Tennessee Army National Guard spots signs of illegal activity along the U.S./Mexico border in the Sasabe District of Arizona Jan. 19. The Soldier was recently involved in an incident in which his entry identification team was appro...

The towns of Nogales, Ariz., left, and Nogales, Mexico, stand separated by a high concrete and steel fence. Many consider the area one of the most dangerous along the border, with numerous reports from U.S. Border Patrol agents of being spit on, havi...