officers in Puerto Rico were arrested for drug-running charges. The yearlong undercover operation was initiated by the FBI, after authorities got a tip about the police possibly being involved in drug dealing, and protecting cocaine dealers and shipments and movement throughout the island. Between 1993 and 2000, 1,000 police officers in Puerto Rico lost their jobs from the department due to criminal charges. Police corruption in Puerto Rico stems from the fact that police officers make small wages and are so close to the cocaine trafficking. Operation Guard Shack was a two-year FBI investigation into law enforcement corruption in Puerto Rico. The operation came to a conclusion on 6 October 2010 with a series of pre-dawn raids that led to over 130 arrests of members of the Puerto Rico Police Department, various municipal departments, and the Puerto Rico Corrections Department. The operation began at 3 a.m., when 65 tactical teams, including FBI SWAT and the Hostage Rescue Team (HRT), fanned out across the island in a series of sneak attack arrests. On hand were a range of Bureau personnel—crisis negotiators, evidence response team members, canines and their handlers, and 80 medical personnel from first responders and nurses to a trauma surgeon and a veterinarian. The central thread of the corruption was law enforcement officers providing protection and other services to drug traffickers. Over 1,000 agents of the FBI conducted the raids. Many of them were flown in secretly. The agency characterized the action as, "likely the largest police corruption case in the FBI's history." Gangs It is cheap and easy to buy and deal to the public in housing projects in Puerto Rico, leading to the second highest homicide rates in the United States or its territories. New gangs like La ONU and Rompe ONU are also prominent in Puerto Rico. They are in the illegal drug trade. Crime reduction The Puerto Rican government has implemented a series of law enforcement operations in relation to the federal "war on drugs" in order to minimize drug-related crimes and trafficking on the island. In 1985, the government started Operation Greenback, an investigation by the FBI, Internal Revenue Service (IRS), the Department of Justice (DOJ), and the Drug Enforcement Administration (DEA), into the inconsistencies between the drastic increase of cash flow into the Puerto Rican economy and the double digit unemployment rate and bad economy in the 70s and early 1980s. The operation