The number of ships the US builds and other general quantities of war materiel is public knowledge. Beyond government accountability, US policy is designed arou

The number of ships the US builds and other general quantities of war materiel is public knowledge. Beyond government accountability, US policy is designed around deterrence, where you want your potential adversaries to see just how big a stick you're carrying so as to prevent them attacking you in the first place. With modern satellites, it would be impossible to hide any large scale production even if we tried to keep it secret. The US certainly does have some classified military procurement, but these items are too small to have any critical details revealed by a crude analysis of steel consumption.