Sounds like a serious cover up.
From what I understand the military remains extremely sensitive to OHS matters .. this dates back to the F111 deseal/reseal program which caused the system quite some heartache. Over recent years, the military reaction to some matters which would be taken in the civil stride has been a tad active and, I suspect, the present matter is in the same vein.
Only reason why aircraft would be left in the open like this.
.. or there may have been no hangarage available. I am aware of previous KingAir matters where the aircraft concerned have been parked outside for extended periods so this is not necessarily anything out of the ordinary.
There must be a real answer.
Conversely, it may just be the normal process working its way through a particular problem ?