Shooting of Sean Monterrosa

Starting Gate was located in Vallejo, California on California's historic U.S. Route 40, serving the East and North Bay counties of the San Francisco area. The school was a co-educational pre-collegiate, non-profit facility governed by a board of trustees and supported by tuition revenue, charitable contributions, and endowment income. Starting Gate was a private K-12 school with a separate preschool facility.

Vallejo High School is a high school located in Vallejo, California. It is part of the Vallejo City Unified School District and has been in the heart of Vallejo for more than 100 years. It currently serves the west side of the city (west of Interstate 80). In February 2014, the School's mascot was changed from the Apaches to Redhawks. This was due to the controversy revolving around the use of the name of a Native American tribe as a mascot.

Sutter Solano Medical Center (SSMC) is a 106-bed general acute care hospital located in Vallejo, California, the largest city in Solano County and second largest city in the North Bay (San Francisco Bay Area). It is part of Sutter Health. In 1907, Dr. James Hogan established the Hogan Hospital at Virginia Street and Sonoma Boulevard in Vallejo. A few years later, the hospital was sold to Tobe Williams, who in 1921 founded a new facility to replace Hogan Hospital. The new Vallejo General Hospital operated at its Tennessee Street location until 1969, when it moved to a new home by Lake Chabot. Vallejo General joined Sutter Health in 1984 and became Sutter Solano Medical Center.The Sutter Solano Cancer Center opened in 2005 and is accredited by the American College of Surgeons' Commission on Cancer. As members of the Sutter Cancer Research Consortium, Sutter Solano participates in the National Cancer Institute's Cancer Research Network. In 2017, SSMC partnered with Tuoro University California in Vallejo to open a mobile diabetes education center.SSMC received an "A" grade for patient safety from The Leapfrog Group in 2013. It received a "C" in 2021. In 2020, SSMC received the Gold Quality Achievement Award from the American Heart Association for high quality heart failure care.

Vallejo ( və-LAY-(h)oh; Spanish: [baˈʎexo]) is a city in Solano County, California and the second largest city in the North Bay region of the Bay Area. Located on the shores of San Pablo Bay, the city had a population of 126,090 at the 2020 census. Vallejo is home to the California Maritime Academy, Touro University California and Six Flags Discovery Kingdom. Vallejo is named after Mariano Guadalupe Vallejo, the famed Californio general and statesman. The city was founded in 1851 on General Vallejo's Rancho Suscol to serve as the capital city of California, which it served as from 1852 until 1853, when the Californian government moved to neighboring Benicia, named in honor of General Vallejo's wife Benicia Carrillo de Vallejo. The following year in 1854, authorities founded the Mare Island Naval Shipyard, which defined Vallejo's economy until the turn of the 21st century. Other nearby cities include American Canyon, Fairfield, Hercules, Martinez, Napa, Suisun City, and Vacaville.

Lake Chabot () is a small man-made lake in Vallejo, California, United States. The lake was built in 1871 and served as a water source for Vallejo until the city approved their own municipal water system in 1892.Dan Foley Park provides recreational access to the south side of the lake. Six Flags Discovery Kingdom is on the lake's north side.

The First Presbyterian Church in Vallejo is a historic church in Vallejo, California. Founded in 1862 as an Old School congregation during the Old School–New School Controversy, it is now part of the Presbyterian Church (USA)'s Presbytery of the Redwoods. In 1954, the congregation consecrated the current building, which houses classrooms, offices, an auditorium, a social hall, a chapel, and a sanctuary.The building hosts programs for students at Vallejo Middle School, and also serves as seasonal concert space for the Vallejo Choral Society.The congregation is part of a group of Solano County and Napa County institutions that make up a local chapter of the Industrial Areas Foundation.

Two former city hall buildings in Vallejo, California are listed in the National Register of Historic Places. Today the old city hall built in 1872 partially houses the Temple Art Lofts, a combination art gallery and apartment complex, and the 1927 city hall houses the Vallejo Naval and Historical Museum.

The Empress Theatre is a historical landmark located in downtown Vallejo, California built in 1911. It was re-opened in 2008 after nearly 20 years of disuse following the 1989 Loma Prieta earthquake. The one room movie house has undergone complete renovation and seismic retrofit. Operated as a non-profit, it now shows movies, hosts live performances, and is rented for private events.

Rindler Creek is a stream that rises on Sulfur Springs Mountain in southwestern Solano County, California. A stream restoration project has been conducted to reverse the damage of cattle overgrazing. One goal of this project is to enhance habitat suitable for the endangered Northern Red-legged Frog. Water quality has been altered in Rindler Creek due to historic cinnabar extraction in this watershed. Cinnabar deposits were mined from this locale in the early 1900s via Hastings Mine and St. John's Mine. Shaft construction occurred no earlier than 1918 and mining had ceased by the year 1930.

Kong is an inverted roller coaster located at Six Flags Discovery Kingdom amusement park in Vallejo, California. The Suspended Looping Coaster (SLC) model was manufactured by Vekoma and first opened to the public as Hangman at Opryland USA on May 1, 1995. Following Opryland's closure in 1997, the roller coaster was sold to Premier Parks and moved to Six Flags Discovery Kingdom, where it reopened as Kong in May 1998.

Blue Rock Springs Creek is a 3.4-mile-long (5.5 km) stream that rises on Sulfur Springs Mountain in southwestern Solano County, California. A bicycle trail is positioned along the creekside in some of the lower reaches. Water quality is impaired in Blue Rock Springs Creek due to historic cinnabar extraction in this watershed. Blue Rock Springs Creek has been tested for the toxin diazinon and found to have attained an elevated value of 40.9 micrograms per liter; diazinon is a toxic pesticide associated with golf course maintenance. The 36-hole Blue Rock Springs Golf Course lies in this watershed; although diazinon has been banned for golf course use in the U.S., its persistence in the environment is quite high. The stream has had application of a hydrological transport model to analyze flooding potential and to aid in the design of certain stream channel modification carried out in the last quarter of the 20th century to accommodate urbanization of some of the lower reaches. Cinnabar deposits were extracted from this watershed in the early 1900s at Hastings Mine and St. John's Mine. Shaft construction occurred no earlier than 1918 and mining had ceased by the year 1930.

Medusa is a steel roller coaster located at Six Flags Discovery Kingdom in Vallejo, California. Built by Bolliger & Mabillard, Medusa opened in 2000 as the first floorless roller coaster on the West Coast. The roller coaster features seven inversions, a 150-foot (46 m)-tall lift hill with a 150-foot (46 m) drop, and the first Sea serpent roll element ever built on a B&M roller coaster. The ride is the longest coaster in Northern California at 3,937 feet (1,200 m) long and is notable as having one of the largest vertical loops in the world at 128 feet (39 m). It also shares the height record in Northern California with another two rides in the same park, The Flash: Vertical Velocity, and Superman: Ultimate Flight at 150 feet (46 m) high.