How the US Army botched a $1 billion upgrade of the Stryker armored vehicle's gun

• The US Army moved fast to arm its Stryker armored vehicles with a powerful autocannon.
• The 30mm gun would even the odds with Russian and Chinese troop carriers.
• But the Army put in a large order before ensuring the first turrets worked properly. 

Fearing that its Stryker armored vehicles were outgunned by Russian and Chinese designs, the US Army had an idea for a quick fix: Develop an unmanned Stryker turret with a 30-mm autocannon. But cutting corners in the $1 billion project has led to hardware and software issues that mean the more lethal Strykers won't be available until at least the end of 2024, a year later than scheduled.