As the 101st Airborne Division prepared last year to receive their first M10 Bookers—armored combat vehicles designed specifically for infantry forces—staff planners realized something: eight of the 11 bridges on Fort Campbell would crack under the weight of the “light tank.”

It turns out that though the vehicle was initially conceptualized as relatively lightweight—airdroppable by C-130—the twists and turns of the Army requirements process had rendered the tank too heavy to roll across the infrastructure at the infantry-centric Kentucky post, and nobody had thought about that until it was too late.

“This is not a story of acquisition gone awry,” Alex Miller, the Army’s chief technology officer, told Defense One. “This is a story of the requirements process creating so much inertia that the Army couldn't get out of its own way, and it just kept rolling and rolling and rolling.”

It’s a twist on the classic Pentagon procurement snafu—a program that moves so slowly that it’s outdated by the time it reaches the field.