At least two people have been shot at a US naval base in Millington, Tennessee according to media reports.
It is understood that emergency crews are have responded to an incident at the base's Army National Guard recruiting center.
Multiple ambulances are on the scene and a shelter in place order has been given on the base.
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ITV News has seen a letter informing Arcadia's suppliers that the company is imposing a 2% discount on all existing and future orders.
"Our own president uses words infamously spoken by Josef Stalin to describe his enemies," Senator Jeff Flake said.
The Met Office has issued a fresh amber warning of heavy snow for southern Scotland and northern England on Wednesday into Thursday.