I was walking with a friend on our local bike path. (We have walked together for 5 yrs. We always stargaze and my friend looked up and pointed at a satellite(he's great at spotting them)and just as he was starting to say how fast it was going another one appeared behind the first one. The first one just disappeared as the second one came behind it travelling perhaps 5x the speed of the first one. That one then either disappeared at the same spot as the first one but it really appeared to hook towards the west at a 90 degree turn then disappeared. My friend and I were amazed at the speed of the second one and the fact that they both just vanished. We also felt like the second one was chasing the first. We both just stood there, mouths agape for a few seconds,before we voth realized that we had seen something we had never seen before in all our years walking. I know this sounds like something a person wouldn't do but I personally log between 5 and 10 miles a day, most of the time its anywhere from 1 1/2 to 3 hrs so I know the night skies quite well. Happened near the enbd of august or beginning of september 2014.