I observed this mysterious satellite triplet in the night between 12th and 13th of August 2014 @ 21:26 UT in Turku, Finland, while trying to observe Perseid meteor shower. These satellites were moving upwards in the constellation of Aquila. First two of them were flaring and then fading, then the third one flared and faded away in similar way. When flaring, they were easily rivaling Vega!
So far my attempts to find out the identity of these satellites have not been successfull. I first suspected some NOSS satellite, but I couldn’t find any good match with Heavensat program. So this one remains as a mystery so far! If someone of you would have any idea about this satellite, I would be happy to hear!