executive assistant chiefs, ten assistant chiefs, 44 captains, approximately 220 lieutenants and 900 sergeants. HPD headquarters, 1200 Travis, is in Downtown Houston. The current Chief of Police is Troy Finner. HPD divides the city into 13 patrol divisions. Each division is divided into one or more districts and each district is divided further into one or more beats. Stations are operated and staffed 24 hours a day. HPD also operates 29 store front locations throughout the city. These store fronts are not staffed 24 hours a day, and generally open at either 7:00 or 8:00 AM, and close at 5:00 PM. Downtown Houston is patrolled by the Downtown Division, and the Houston Airport System facilities have their own divisions. A map of all stations and store front locations can be found at the HPD web site. The Houston Police Department administrative offices and investigative offices are at 1200 Travis in Downtown Houston. The 61 Riesner site houses the HPD central patrol office, the municipal jail, and the transportation department. The 33 Artesian facility houses the communication and maintenance facilities. In December 2013 the city announced that it has plans to build a new headquarters for HPD and the city courts. By the end of 1989 the police department had established 19 storefronts and planned to open 10 additional storefronts in 1990. Patrol vehicles As of 2015, the department uses a large number of Ford Crown Victoria Police Interceptors as their main fleet of patrol vehicles which was first ordered in 1996 replacing the Chevrolet Caprice 9C1 (used between 1988 and in patrol service until 2004 (replacing the Ford LTD Crown Victoria squads to 1987 along with M-bodied Mopars (primarily the Plymouth Gran Fury (both R and M platform) last used in 1989)). They have Ford Crown Victoria Police Interceptor models from dating from 1999 to 2011. Since Ford no longer produces the "crown Vic" (procurement of the Crown Vic ended in April 2011 when the orders were filled), The department has chosen to phase in the Chevy Tahoe PPV and Ford Police Interceptor Utility (Explorer) as the successor to the Ford Crown Victoria Police Interceptor. The department is continuing to test new Chevy Caprice PPV models and Ford Taurus Interceptors (including the fifth-generation Explorer) as well - the test mules as of 2015 have been integrated into the mainstream vehicle fleet. It also uses pickup trucks from the Big Three,