What we know so far about the Chinese spy balloon and the other objects shot down

Eleanor Watson, David Martin, Robert Legare, Sara Cook, Nancy Cordes and Ed O'Keefe contributed reporting. The Associated Press also contributed reporting. 

When a Chinese spy balloon floated across the U.S. earlier this month, it ignited a firestorm of concern on Capitol Hill and led to the cancellation of Secretary of State Antony Blinken's trip to China amid already-fraught relations between the two countries.