Arivaca, Arizona
A quick look at Arivaca, a town of 700 people about an hour's drive from Tucson.
As featured on
Community of independent thinkers caught between smugglers, agents.
200-foot set-back is used by Border Patrol at Arivaca checkpoint.
Agent knew of threat on Arivaca family before two members were killed in 2009.
As water lifeline evaporates, Arizona faces a cultural change over water use
