Location of events unknown.
Police training w/ bullet-proof shields. Opening re-enactment of police sneaking up the street is almost too dark to see; but becomes a bit lighter. 4 policemen w/ 2 rolling shields - front men push these shields on wheels; while the back men hide behind holding up other shields. There seems to be gunfire.
Re-enforcements arrive. The police group steps into house. Front view of the shields advancing. Shot of criminals w/ guns pointed at camera - but very dark. More demonstration of these new inventions.
Note: footage is quite dark, making it hard to see what is going on in some shots.
Safety. Law enforcement. Crime.