Not enough evidence at all to call this an assassination attempt. Because the window was open?? Maybe he had opened the window himself. Maybe the crew who ran into his office after hearing the shot opened the window? You can't say. One thing I noticed is that after the shot is fired, at the same time you hear the thud of his body hitting the floor, you can also hear the loud thud of what sounds like nothing other than a gun hitting the floor as well. Sounds to me like a definite suicide attempt.... the walls are closing in.