US man who triggered a major alert by falsely claiming his son was adrift in a helium balloon has been sentenced to 90 days in jail - and his wife to 20.

• 一名声称自己儿子随一个氦气球漂浮在空中并因此引发公众警戒的美国男子被判刑90天监禁，他妻子获刑20天。