I saw something flashing brightly above the foothills west of denver, colorado. started taking pictures a half second apart. in the first picture the object is a rectangular shape, then it's the shape of an acorn, and in the third picture it's back to the rectangular shape before disappearing all together. the fourth and fifth picture shows the shape of the clouds are exactly the same, except the object is gone. these pictures were taken on april 26, 2019, at 5:36 pm.