Why would one believe that US intelligence agencies have no information about extensive reports of drone activity near military installations? Given that this has been happening for a couple weeks now, and the military has said “these are not a threat”, the clearly more plausible explanation is that they know what these are, and they aren’t saying.

This is what the military does when they are testing classified military technology. “It’s not ours. It’s not the enemy’s. It’s not a threat. Nothing to see here.”