The rest all got away, with no idea what, or who, they brought in, yuma had become the most dangerous part of the border. Ronald Colburn More Quotes by Ronald Colburn More Quotes From Ronald Colburn Yuma became the ‘proof of concept’ that America can protect and control its border when the proper mix of resources are placed almost instantaneously, by 2008, Yuma Sector arrests of illicit border crossers and traffickers had dwindled from over 138,000 to 8,363. Ronald Colburn politics