come from taxes, predominately local sales taxes, property taxes, and motor vehicle excise taxes, levied within its taxing district in portions of King, Pierce, and Snohomish counties. Passenger fares, investments, and advertising income make up the remaining 7% of revenue. The agency has successfully passed three major ballot measures to fund system expansion, including Sound Move (1996), Sound Transit 2 (2008), and Sound Transit 3 (2016). Planning and construction of new light rail lines is anticipated to continue until 2041 under the Sound Transit 3 plan. Capital improvement projects will cost $1.3 billion in 2017. Sound Transit's day-to-day operations were expected to lose $190 million in 2017. Tax revenues exceeded the capital improvement budget for the year, so the net loss should be $131 million. Police Sound Transit contracts with the King County Sheriff's Office for police services. Deputies assigned to Sound Transit wear Sound Transit uniforms and drive patrol cars marked with the Sound Transit logo. There is currently one chief, one captain, five sergeants, four detectives, 23 patrol officers, and a crime analyst assigned full-time to Sound Transit. Sound Transit officers patrol Sound Transit property around Puget Sound including vehicles (trains & buses) and stations. History Background Throughout the 20th century, Seattle planners and voters rejected various proposals for rapid transit systems. The Forward Thrust program of the late 1960s produced two ballot measures for a rapid transit system that were unable to pass with the state-required supermajority for bonds. Federal funding that was allocated to the project was instead sent to Atlanta, Georgia, forming the Metropolitan Atlanta Rapid Transit Authority. The Municipality of Metropolitan Seattle (Metro), the regional water quality agency, took over bus operations in King County and the city of Seattle on January 1, 1973, after approval from voters in response to the failure of Forward Thrust. The Puget Sound Council of Governments, an inter-county planning agency, partnered with Metro to complete a light rail corridor study in 1986. The regional transportation plan was amended the following year to include rail transit, and the Washington State Legislature formed a State Rail Development Commission to study a regional transit system with light rail, commuter rail and express buses. Establishment The predecessor to Sound Transit was a 1995 ballot measure that was rejected by voters because of its $6.7 billion cost. The first Sound Transit ballot measure passed in 1996 as the current mix of buses, commuter