My Soldiers found a rather large stockpile of chemical weapons in Iraq on their last deployment. For some reason it was all hushed up very quickly. No one knows why.
Perhaps it was hushed up quickly because the discovery was not something they wanted known to 'insurgents' or terrorists until the cache could be dealt with by removal or destruction by coalition forces. Not an uncommon approach ... see also the hush regarding the tonnes of yellow cake found South of Baghdad, the 'training gasses' found in Salman Pak, etc.