While sitting on my balcony, spotted 5 silver sphere's, that looked like balloons. They appeared very high in the sky, and were moving from North Brantford, to my sighting, in the East end of Brantford. They were in no particular order, but all moving in the same direction. There was also, one sphere, that looked as though it had a string attached, pulling another sphere, that was not far underneath it. Their movement was smooth, in one direction, and it took about 4-5 minutes, until they were out of sight. I was hoping to catch them on my phone, but they were out of sight, too soon. I will be making several more trips out on my balcony today, trying to capture an image or video, if I see these again.