the next day:

In a speech to Pentagon employees on September 10, 2001, Secretary of Defense Donald Rumsfeld disclosed that over $2,000,000,000,000 (yes, twelve zeroes) in Pentagon funds could not be accounted for. “According to some estimates,” he said, “we cannot track $2.3 trillion in transactions.”
His statement didn’t make world headlines the next day.
[...]
Coincidentally, when the Pentagon was hit on 9/11, the “plane” hit an office of the Army where an investigation of the of the $2.3 trillion missing was taking place. The office lost 34 of its 45 employees, most of whom were civilian accountants, bookkeepers and budget analysts—officials who were reportedly working on the investigation.

Rahnuma Ahmed/Shahidul News