While we were not directly involved, We watched a fun one go down.
Last summer we were at Chatfield State Park in CO when a campsite party near us started getting louder and louder and louder until someone called the Rangers. A few minutes after the first Ranger arrived, more Rangers showed up followed closely by county Sheriff Deputies. Then a Sheriff K9. (All this in the middle of the day).
Other campers actually pulled out lawn chairs to watch! After about an hour, 4 people left in custody and the rest of the caming party packed up and left. Apparently a significant amount of drugs/contraband were found along with some outstanding warrants.
A soft round of applause was heard when they packed up and water bottles were given to the cops for their help!