Former CIA Director John Brennan (left) doesn't support calls to shoot down a suspected Chinese spy balloon (right).
Former CIA Director John Brennan (left) doesn't support calls to shoot down a suspected Chinese spy balloon (right).
  • Former CIA Director John Brennan said it'd be "impulsive" to shoot down the suspected Chinese spy balloon. 
  • Republicans, including Donald Trump, have called for Biden to take out the balloon. 
  • Brennan told NBC News that China may have sent the balloon to test the US' response.

Former CIA director John Brennan said it would be "impulsive" to shoot down China's surveillance balloon that's hovering over the US — despite demands from Republicans for Biden to take out the floating device.