result of these riots that the still-active Community Relations Division was created within the HPD. In 1970, the Helicopter Patrol Division was created with three leased helicopters. That year also marked the department's first purchase of bulletproof vests for their officers. The HPD's first Special Weapons and Tactics squad (SWAT) was formed in 1975. Modern times In 1982, the Houston Police Department appointed its first African-American chief of police, Lee P. Brown, who succeeded B.K.Johnson. Brown served as chief from 1982 to 1990 and later became the City of Houston's first African-American mayor in 1998. While Brown was considered a successful chief, he also earned the unflattering moniker "Out of Town Brown" for his many lengthy trips away from Houston during his tenure. Brown's appointment was controversial from the start. Traditional HPD officers frowned upon Brown because he was an outsider from Atlanta, Georgia where he was the police commissioner; to become the police chief in Houston, an officer has to advance through the rank and file although the "good old boy" culture was prevalent. The HPD paved a new road again in 1990 when Mayor Kathy Whitmire appointed Elizabeth Watson as the first female chief of police. Elizabeth Watson served from 1990 to 1992 and was followed by Sam Nuchia, who served as police chief from 1992 to 1997. In 1997, Clarence O. Bradford was appointed as chief. In 2002, Bradford was indicted and later acquitted of perjury charges, stemming from an incident in which he allegedly lied under oath about cursing fellow officers. Since 1992, the Houston City Marshal's division, Houston Airport Police, and Houston Park Police were absorbed into HPD. In early 2004, during Mayor Bill White's first term in office, HPD absorbed the Neighborhood Protection division from the City of Houston Planning Department, which was renamed the Neighborhood Protection Corps in 2005. Annise Parker, Mayor White's successor, moved the Neighborhood Protection Corps into the Department of Neighborhoods when the new city division was established in August 2011 - the NPC was renamed as the Inspections and Public Service division of the Department of Neighborhoods. Crime laboratory In November 2002, the CBS local TV station KHOU began broadcasting a multi-part investigation into the accuracy of the HPD Crime Lab's findings. Particularly of interest to the reporters were criminal cases that involved DNA analysis and serological (body fluid) testing. Night after night journalists David Raziq, Anna Werner and