Shiney crome ,very fast and moved in every direction with easy.

There were 6 shiney orbs, like crome tic-tacs flying in formation but in a box like formation, one of these crome objects would brake formation and take off and backwards for a few seconds then come back and perform moves in every direction like it was nothing. They would all take turns doing this, and at speeds I've never seen before, in every direction. And I think they were following a jet airliner that had past over me about 5 minutes earlier. These crome shiney orbs could have with cought the jet air liner with out hesitation. And then with a blink of my eyes they were gone in the cloud cover to there left.