We were getting ready to watch fireworks and we saw something red flying through the air. It had no flashing lights but was flying in a straight line across the sky.A few minutes later we saw a second one but it just disappeared when we were watching it in the middle of yhe in sky.Finally we saw a green one that was going up and down and would hover for a few moments the it went forward and then backwards to where in we'd hovering. It also turned red and would flash red and green.We were unable to see the shape or anything. We just saw the colors in the sky.