US fighter jets have now shot four mysterious objects out of the sky
1950s-style paranoia about unidentified flying objects has gripped the US in recent weeks. The US military sent fighter jets to shoot four objects out of the sky, identifying one of them publicly as a Chinese surveillance balloon. There’s no doubt the balloon saga has shown up gaps in US monitoring but equally has revealed the dangerous jumpiness in the relationship between the US and China. North America correspondent Barbara Miller reports.