There's more to the border than just a wall. Follow Johnny on Instagram: https://goo.gl/CduwlO and Facebook: https://goo.gl/l0x5cA Subscribe to the Vox Borders newsletter for weekly updates: http://www.vox.com/borders-email This dispatch is from the Rio Grande River, on the Texas side of the U.S. border with Mexico. I embedded with border patrol, to learn about the technology, techniques, and challenges of monitoring a section of the border with over 300 miles of river. Vox Borders is a new international series focused on telling the human stories that emerge from lines on the map. I've traveled to five of six border locations to produce a final set of documentaries. While I travel I'm releasing video dispatches on YouTube and Facebook, documenting my experiences in a vlog that's independent from the final Vox Borders documentaries. Learn more: http://www.vox.com/borders Sources for this story: http://mmp.opr.princeton.edu/results/results-en.aspx https://www.americanimmigrationcouncil.org/research/the-cost-of-immigration-enforcement-and-border-security Vox.com is a news website that helps you cut through the noise and understand what's really driving the events in the headlines. Check out http://www.vox.com/ to get up to speed on everything from Kurdistan to the Kim Kardashian app. Subscribe to our channel! http://goo.gl/0bsAjO Check out our full video catalog: http://goo.gl/IZONyE Follow Vox on Twitter: http://goo.gl/XFrZ5H Or on Facebook: http://goo.gl/U2g06o