A fair amount during Israel's 6 day war--many that were not widely publicized . . . one of a huge hand coming down out of the sky and stopping a column of Egyptian tanks.
Anyway--I'm personally convinced that the amount in quantity and frequency and the overwhelming "otherworldliness" of these sorts of events is set to skyrocket, explode.
The enemy will have his paltry counterfeits as did the magicians in Moses' day. Alas, his rod/snake ate their snakes.
Now whether CNN will be broadcasting such is another question. They'll have a hard time not broadcasting when it happens in the middle of something they are already broadcasting--which it will--quite a lot, I'm rather sure.