Good questions.
Likely won’t know the “why” of it -unless- we kept it quiet either to prevent the terrorists, Al-Qeada at the time, from grabbing it OR we found them, knew where they were and waited for AQ to go looking for them.
Either way, they turned their other cheek and the rest of us got slapped with the ‘07 Pelosi/Reid Congress and the Seven Year Plague of Obama. Unforgiveable.