2 small consecutive black dots over Charles RiverI work on the 42nd top floor of a luxury residence apartment building in downtown Boston. I was on the deck outside when I saw a tiny miniscule black dot rising into the sky over the Charles River at a 30 degree angle in a direct path with no flaws in it's motion. At first I passed it off as a balloon, after it disappeared out of my line of site behind me. However when a second black dot followed it's direct path a minute after. The exact same forward motion that a balloon could not make. I tryed to film it on my camera before it disappeared, but it was too small! I have no clue what it was! Just a small black flying dot.