The Army will spend roughly three years studying the physics of shooting the hypervelocity projectile from 155mm cannons.
The U.S. is increasing domestic explosives production and buying from abroad to support Ukraine and replenish stockpiles of 155mm artillery shells.
Doug Bush discusses how the Army is trying to bolster its industrial base to restore vital stockpiles.
The 155mm howitzer round is one of the most requested artillery munitions of the war in Ukraine.
By Tara Copp, AP
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