Disrupt and desensitize.
Right. They are practicing and determining the reaction of flight crews and passengers to get ready for the real thing.
Funny, I didn't hear anything about this in the American media. I even had someone tell me I was an alarmist when I relayed the details of the Flt 227 incident. I guess when the muzzies start blowing planes out of the sky, there may be some mention, but now it is not "politically correct" to even report.