The US Army is looking for companies that can build up to 12,000 155 mm artillery shells a month.The Army's survey comes as the US supplies Ukraine with arms, including about 800,000 155 mm rounds.The scale of the effort to supply weapons has raised concerns about the status of US stockpiles.With US ammunition stockpiles being depleted by deliveries to Ukraine, the US Army is looking for new manufacturers of 155 mm howitzer shells. The Army recently put out a market survey to identify US...