Locating the black boxes of Air France Flight 447 is a complex problem with a lot of variables.
The plane went down June 1 in the Atlantic Ocean on a flight from Rio de Janeiro, Brazil, to Paris.
Shifting winds and ocean currents make it hard to know exactly where to search for the wreckage, but a South Kingstown company is part of the effort.
NBC 10's R.J. Heim reports.
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