To show they can? In full view of the world's media and military that's quite an achievement really.
One thing this has done is show how easy it is, relatively speaking, for a massive airliner to completely vanish leaving no trace whatsoever. It also makes all of the Big Brother is watching you...
It must be hell for relatives not knowing what has happened. Equally, it must be difficult for the Malaysian authorities to give out information whilst maintaining some level of security until they know what they are dealing with. None of us know what had happened to the plane. Is it a tragic...