The FBI should start putting some flyers around surreptitiously in the Arabic community, in Arabic, w/ photos of the drone damage, hinting that more is in store for any rad-islamist cell members cooperating with alQaida and against US interests, and that in due time, all will be obliterated off the face of the earth. I can visualize some of these being spread around a bit on the floors of Arabic markets, at mosques, near suspected cell locations, etc. The terrorist scum have to go out SOMETIME to buy their pita and hummus and goatmilk. They might start getting the message upon picking these up.
Some stinking federal judge might restrain it though, calling it 'politically incorrect.'