By no means do we have a monopoly on it... but we do help the Ames PD refresh their stock of tear gas every once in a while so that it doesn't expire (For the record, most/all of the tear gas in the 2004 riot had expired year and years earlier, which ment it had much less of an effect that it should have

)
Out of curiosity, was that early 90's riot the one where a bonfire was built in the street, which melted the asphalt?