Mexican federal police officers try to serve an early morning arrest warrant on a drug cartel chieftain in the City of Aguas Calientes, State of Zacatecas. The drug lord and his associates began shooting at the officers from inside their compound resulting in a 3 hour gun battle. Two officers were critically wounded and airlifted to hospitals in Mexico City and many of the drug cartel members were killed. Warning Video Contains Graphic Scenes of Dead Bodies. Viewers May Consider Disturbing.