2130 object flashed on for about 2 full seconds then off for 5 seconds each time at roughly 5 deg. track object in outer spacei was fishing the deschutes river in maupin oregon at roughly 21:30 no moon very clear night milky way straight above very bright blanket of stars. observed the usual satelite and dramatic shooting star, my night vision was completely set, no flashlights had been turned on by myself or either of my two fishing partners, for at least 10 minutes then out of the corner of my eye i caught a very bright flash at first i thought it was a twinkling star so i fixed on that general point in space, a couple of seconds later another flash this one was not as bright as the first about the luminosity and size of a satelite. important to note that the light source appeared to be energy/electric, not fire as in a jet engine or meteor bouncing. i was seeing somthing in the night sky that i had never witnessed before i called to my friends on the bank 10ft behind me and pointed to that spot in the sky frantically insisting they watch for a flash, "there it is again i exclaimed, did you guys catch that"? "yeah, there it is", both of them aknowledging a visual on the flashing object the three of us watched as the object proceeded on an east to west course.((NUFORC Note: We suspected that the witnesses might have been looking at a tumbling booster shell, but they do not move to the west. PD))