How do we know it was a "single" drone, or that they knew for sure that it was?
replyIndeed.
replySo with this lack of information: Why 10 days? Why not 3, or 12, or some other number instead?
Or: Why must there be a number?
Is the officious equivalent of "We've got some shit to deal with, so El Paso's airspace is closed for now" insufficient?