Though retailers have gotten some fireworks that shipped before tariffs were imposed, shipping costs are going sky-high.

The twists and turns in U.S. President Donald Trump's tariff policies have not only rattled global financial markets but have also taken investors on a roller-coaster ride. Companies are counting the cost of the trade war that is now being estimated at more than $34 billion in lost sales and higher expenses,

The pyrotechnics industry relies heavily on Chinese fireworks imports and warns that this could be the last big bang Fourth of July.