Low De Wei And Gregory Kate

As mysteries continue to swirl around the balloon and three other so-far-unidentified objects shot down by the US in recent days, at least one thing has been clear: the weaponry used to knock them out of the sky.

As mysteries continue to swirl around the balloon and three other so-far-unidentified objects shot down by the US in recent days, at least one thing has been clear: the weaponry used to knock them out of the sky.