I bet they could get recordings of false reports, run a voice print analysis, and identify the caller(s).
2006: "JANE, Mo. - Call it Area 71. Behind a fence topped with razor wire just off U.S. Highway 71 is a bunker of a building that Wal-Mart considers so secret that it won't even let the county assessor inside without a nondisclosure agreement.
The 125,000-square-foot building, tucked behind a new Wal-Mart Supercenter, is only a stone's throw from the Arkansas line and about 15 miles from corporate headquarters in Bentonville, Ark.
"We were contacted about two years ago by somebody who runs a security company that had been asked in a request for proposals for ways they could link video footage with customers paying for their purchases," Albrecht said. "Wal-Mart would actually be able to view photos and video of customers paying, say, for a pack of gum. At the time, it struck me as unbelievably outlandish because of the amount of data storage required."
But Wal-Mart, according to a 2004 New York Times article, had enough storage capacity to contain twice the amount of all the information available on the Internet. For the technically minded, the exact amount was for 460 terabytes of data. The prefix tera comes from the Greek word for monster, and a terabyte is a trillion bytes, the basic unit of computer storage."
joplinglobe.com/news/local_news/wal-mart-s-data-center-remains-mystery/article_5f088740-04ea-531d-b526-a2cc9862c8aa.html