As traditional weapons suppliers like the U.S. face wartime production shortages, South Korea has stepped in to fill the gap, while trying not to provoke Moscow.
The combination of the war in Ukraine and concern about longer-term threats from Russia and China are driving a bipartisan push to increase U.S. capacity to produce weapons.
Contracts that could total $9 billion were awarded to Amazon, Google, Microsoft and Oracle. An earlier effort, won by Microsoft, was scrapped after rivals objected.