of Interior absorbed four civil airborne squadrons The Airborne Squadron of National Police Agency, The Preparatory Office of the Airborne Fire Fighting Squadron of National Fire Agency, The Aviation Team of Civil Aeronautics Administration of Ministry of Transportation and Communications, The Air Patrol Squadron of the Coast Guard Administration. NASC takes over the responsibilities of five major airborne tasks:Search and Rescue, Disaster Relief, Emergency Medical Services, Reconnaissance and Patrol, and Transportation. On 26 July 2004, members of the Criminal Investigation Bureau engaged in what was arguably the largest gun battle in the history of modern Taiwan with members of a kidnapping gang in Kaohsiung County (now part of Kaohsiung City). Though they held a numerical advantage, the officers found themselves outgunned by the suspects who possessed bulletproof vests and M16's. In the ensuing gunfight four police officers were injured, and two suspects were shot and arrested. However the ringleader of the gang managed to escape along with a cohort after holding a passing civilian hostage and escaping in a hijacked car on live TV. The ensuing manhunt was widely covered, the ringleader ) was finally arrested following another gun battle with police on 13 July 2005. On 28 February 2006, Hou You-yi, the Criminal Investigation Bureau Commissioner, assumed command as the director-general of the National Police Agency. He, a career criminal investigator, is the youngest-ever to hold that post. , Chief of Taipei City Police Department, was named as the new director-general effective June 2008. On 2 Jan 2007, according to "the Organic Law of the National Immigration Agency" enacted on 30 Nov 2005, the NPA's former Immigration Office was expanded to become the National Immigration Agency under the direct control of the Ministry of the Interior, and Wu Cheng-chi (吳振吉) was named the first director general of NIA. Other duties In addition to normal law enforcement duties, police in the ROC are charged with other slightly more unusual duties such as taking census data, as well as immigration and visa related issues. Most jurisdictions also have a Foreign Affairs squad staffed by English speaking officers tasked with visa enforcement and issues relating to foreigners or the foreign community in Taiwan. Interdepartmental cooperation Bureau of Investigation Regarding drugs, corruptions, espionage, and economic crimes, the Investigative Bureau of Ministry of Justice (MJIB) has developed stronger capability to cover cases in those categories for decades. The investigation of these cases, police corruption