In Andrew Davis' "The Package", there is a scene where a Chicago cop (Dennis Franz) is assisting his old army friend (Gene Hackman) in looking for suspects in an almost deserted building. They split up and Franz locates one of his police colleagues (Ron Rich)lurking around in the building. There is an altercation, both men draw their weapons and Rich is killed. The slip up occurs when Franz fires his revolver. Listen carefully, and you will hear that the explosions on the sound track do not totally cover the pops of the blanks(in other words, you can hear both sounds at the same time)