Radar shows U.S. border security gaps
Vader, a system originally used to track the Taliban, finds that more immigrants elude capture at the U.S.-Mexico border than previously estimated.
April 3, 2013, 5:22 p.m.
Operated from a Predator surveillance drone, the radar system has collected evidence that Border Patrol agents apprehended fewer than half of the foreign migrants and smugglers who had illegally crossed into a 150-square-mile stretch of southern
The number of "gotaways," as the Border Patrol calls those who escape apprehension, is both more precise and higher than official estimates.
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According to internal reports, Border Patrol agents used the airborne radar to help find and detain 1,874 people in the
In contrast, the Government Accountability Office, the investigative arm of Congress, estimated in January that the Border Patrol had caught 64% of those who illegally crossed into the
The new tally of unlawful border crossings could complicate White House efforts to pass comprehensive immigration reform after Congress returns from recess next week.
The Obama administration contends
President Obama is scheduled to visit
The new system is called Vader, for Vehicle Dismount and Exploitation Radar. It was borrowed from the Army's Aberdeen Proving Ground in
PHOTOS: Securing the border with Mexico
Michael Friel, a spokesman for U.S. Customs and Border Protection, said the Vader remained in a "preliminary testing phase." He also said the method used in the agency's internal reports to compare apprehensions to arrests was flawed because it didn't include people who were detained after the airborne radar had left the area.
Officials warn that the radar would not work well near border towns and areas where migrants and smugglers can quickly load into a car and blend into highway traffic.
"There is no silver bullet in border technology," Friel said.
The tests have gone well enough that the agency has asked Congress to allocate money to purchase two more Vader systems. Each system costs about $5 million per year to maintain and operate.
The Pentagon's internal research and development group, the Defense Advanced Research Projects Agency, helped design the Vader to aid
The radar is sharp enough to detect and track individuals on foot from a Predator five miles overhead. It uses a synthetic aperture radar to collect high-contrast black-and-white images and to follow scores of moving targets in real time. The processed signals are transmitted from the drone to a ground station, where the figures are displayed as moving dots on a detailed map.
"It's a match made in heaven for border security," said a former
He said the radar had helped Border Patrol agents watch migrants and smugglers gathering on the Mexican side of the border before they start trekking north. But not all of the agents are happy to get a precise head count for the first time of how many people they are missing.
"The rank-and-file guys are afraid it will make them look bad," the official said. He spoke on condition of anonymity because details of the program are not public.
The system is being tested along with military-grade camera towers and surveillance blimps developed for use in
Most of the Vader flights have focused on a stretch of border flanked by desert and the craggy
"That is the kind of technology we would like to see all across the border," Rep. Michael McCaul (R-Texas), who chairs the House Committee on Homeland Security, said in a telephone interview.
McCaul said he was briefed on the Vader during a visit to the border in
"You can't measure what you can't see," he said. "There is an awful lot we're not seeing."
Marshall Fitz, director of immigration policy for the Center for American Progress, a liberal think tank in
No matter how many border agents or high-tech systems are deployed on the border, Fitz said, "you are never going to get to the point where you can raise the '