Two airplanes bound to Paris were diverted and grounded in Salt Lake City and Halifax, Nova Scotia, after separate bomb threats sent transportation and emergency officials into high alert.
Both flights were ultimately given the all-clear, but not before the planes were subjected to thorough searches.
The Royal Canadian Mounted Police put out a couple of tweets about the incidents: "#RCMP will be searching the Air France plane using police dogs trained in explosives."
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And another, reported by CNN: "Luggage will also be searched by police dogs. #RCMP working closely with @HfxStanfield on this situation."
The first plane, Air France Flight 65, had taken off from Los Angeles but was grounded in Salt Lake City after a bomb threat was received by authorities. Just a short time later, Air France Flight 55 from Washington's Dulles International Airport to Charles de Gaulle Airport in Paris was diverted for its own bomb threat.
The U.S. military did not scramble any craft for either threat, which occurred late Tuesday evening, NORAD spokesman Preston Schlachter said, in CNN.
"Diversion of flights are the most draconian response to a bomb threat," said CNN's national security analyst Juliette Kayyem said.
One passenger, Kathless Ingley, 65, of Phoenix, said she was on Flight 65 and finishing dinner when she felt the air pressure change.
"And then the flight attendants told us we would be making an emergency landing," said said to USA Today, from a phone call from the Salt Lake City International Airport. "They told us to put trays on the floor and tighten our seat belts and get anything out of the aisles. No one had any idea what the problem was. Every possible scenario runs through your mind."
Air France posted a late night Twitter message that both flights had been "subjects of anonymous threats received after their respective take-offs," USA Today reported.
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