Watching tv out the window I noticed a black glass ball - it suddenly appeared in the field out my window. The ball took off straight up like a fireball and looked like it was slingshot NW of the home. I ran through the house out my garage and with my phone to video tape it when it there were two fireballs that were massive that kind of danced in a circle they were huge . My phone was not responsive - after turning it on and off - I got it to work. One of the orbs had disappeared and the other one suddenly got big and almost looked like there was a hollow center to it - then it became really small and began moving N- then my phone shut down instantly ... this is the only video of it I got before my phone went black.As I was trying to see what was wrong with my phone and typing this up - 3 helicopters are out in the sky over Minot outskirts and Surrey in the direction the orbs was when it began to get smaller and over our neighborhood. The black glass sphere - seemed to be at least 75ft in diameter.