Port Chicago, California

The Port Chicago disaster was a deadly munitions explosion of the ship SS E. A. Bryan on July 17, 1944, at the Port Chicago Naval Magazine in Port Chicago, California, United States. Munitions while being loaded onto a cargo vessel bound for the Pacific Theater of Operations, detonated killing 320 sailors and civilians and injuring 390 others. Two-thirds of the dead and injured were enlisted African American sailors. A month later, the unsafe conditions prompted hundreds of servicemen to refuse to load munitions, an act known as the Port Chicago Mutiny. Fifty men‍—‌called the "Port Chicago 50"‍—‌were convicted of mutiny and sentenced to 15 years of prison and hard labor, as well as a dishonorable discharge. Forty-seven of the 50 were released in January 1946; the remaining three served additional months in prison. During and after the mutiny court-martial, questions were raised about the fairness and legality of the proceedings. Owing to public pressure, the United States Navy reconvened the courts-martial board in 1945—that board re-affirmed convictions. Widespread publicity surrounding the case turned it into a cause célèbre among Americans opposing discrimination targeting African Americans; it and other race-related Navy protests of 1944–45 led the Navy to change its practices and initiate the desegregation of its forces beginning in February 1946. In 1994, the Port Chicago Naval Magazine National Memorial was dedicated to the lives lost in the disaster.

The Port Chicago Naval Magazine National Memorial is a memorial dedicated in 1994 recognizing the dead of the Port Chicago disaster, and the critical role played by Port Chicago, California during World War II, in serving as the main facility for the Pacific Theater of Operations. The national memorial is located at the Concord Naval Weapons Station near Concord, California, in the United States. The 1944 Port Chicago disaster occurred at the naval magazine and resulted in the largest domestic loss of life during World War II. A total of 320 sailors and civilians were instantly killed on July 17, 1944, when the ships they were loading with ammunition and bombs exploded. The majority of the deaths were African American sailors working for the racially segregated military. The explosion and its aftermath led to the largest Naval mutiny in US history, and it and the subsequent trial became major catalysts for the United States Navy to desegregate following the war.

Clyde is a census-designated place (CDP) in Contra Costa County, California, United States. The population was 678 at the 2010 census. It is located six miles (10 kilometres) east of Martinez.

Roe Island Lighthouse was a lighthouse on Roe Island on the east end of Suisun Bay, California.

There are several lighthouses in the U.S. state of California, including a few listed on the National Register of Historic Places. Lighthouse Friends (California)

KVHS (90.5 FM, "90.5 The Edge") is a non-profit high school radio station playing an active rock music format. It is licensed to the Mt. Diablo Unified School District and broadcasts from the campus of Clayton Valley Charter High School, Concord, California. The signal reaches the counties of Contra Costa, Solano, Napa, San Joaquin, West Sacramento and Yolo, and KVHS primarily serves the Diablo Valley area.

Rancho Monte del Diablo (Devil's Mount Ranch in Spanish) was a 17,921-acre (72.52 km2) Mexican land grant in present-day Contra Costa County, California given in 1834 by Governor José Figueroa to Salvio Pacheco. The name "Monte del Diablo" means "thicket of the devil" in Spanish. The name was later incorrectly translated as Mount Diablo. The grant covered the area from the Walnut Creek channel east to the hills, and generally from the Mount Diablo foothills north along Lime Ridge to Avon on the Carquinez Strait of the Sacramento River, and included present day Concord and parts of Pleasant Hill. Pacheco and Clayton are outside of the Rancho Monte del Diablo grant.

Seal Islands are a pair of islands in Suisun Bay at the mouth of the Sacramento-San Joaquin River Delta in Contra Costa County, California, 10 km east of Benicia, and 500 metres off-shore from the former Concord Naval Weapons Station and Port Chicago Naval Magazine.

Roe Island is an island in Suisun Bay at the mouth of the Sacramento-San Joaquin River Delta in Solano County, California, 10 km east of Benicia. Its western tip is named Preston Point, and its eastern tip is Gillespie Point. It is shown, labeled "Preston Island", on an 1850 survey map of the San Francisco Bay area made by Cadwalader Ringgold and an 1854 map of the area by Henry Lange. It is labeled, along with Deadman Island, Joice Island, Grizzly Island, Simmons Island and Ryer Island, on a 1902 USGS map of the area.On November 22, 2010, Brian Hopper was rescued from Roe Island by the U.S. Coast Guard. He had been stranded on the island for five days (after his rubber raft sprung a leak), before using his cell phone to contact a cousin, who notified the Coast Guard.

Nichols is an unincorporated community in Contra Costa County, California, United States. It is on the Atchison, Topeka and Santa Fe Railroad 5.5 miles (9 km) west of Pittsburg, at an elevation of 62 feet (19 m). The place is named for William H. Nichols, president of the General Chemical Company of New York, which built in 1909 a plant here to produce fertilizer and a number of other chemicals for industrial use. In 1921, General Chemical became a division of Nichols's Allied Chemical, later Allied Corporation.

GoMentum Station is a testing ground for connected and autonomous vehicles at the former Concord Naval Weapons Station (CNWS) in Concord, California, United States. The property was acquired and repurposed by the Contra Costa Transportation Authority, acquired in August 2018 by AAA Northern California, Nevada & Utah.In October 2014, the Contra Costa Transportation Authority announced that the GoMentum Station proving grounds would be used to test self-driving cars; according to them, "The public will not have access to the test site, and the self-driving cars will be restricted to the test bed site. With 2,100 acres (850 ha) of testing area and 19.6 miles (31.5 km) of paved roadway, the CNWS is currently the largest secure test bed site in the United States". Mercedes-Benz is reported to have licenses to test new driving technology, including smart infrastructure such as traffic signals that communicate with cars. Among the site's other notable features: "a 7-mile (11 km)-long roadway is great for testing high-speed driving, and a pair of 1,400-foot (430 m)-long tunnels" for sensor testing.Among the roughly 30 partners listed on the company's site are automakers Toyota and Honda, ridesharing companies Uber and Lyft and China-based autonomous driving company Baidu. In summer 2015, reports suggested the Apple electric car project was interested in using the site, as members of Apple's Special Project group were reported to have met GoMentum representatives but there were no subsequent reports of Apple personnel and vehicles actually using the site.In August 2019, GoMentum announced the October launch of its V2X (vehicles-to-everything) testing facility.

Middle Ground Island is an island in Suisun Bay, an embayment of San Francisco Bay, downstream of the Sacramento–San Joaquin River Delta. It is part of Solano County, California, and not managed by any reclamation district. Its coordinates are 38°03′46″N 121°58′53″W, and the United States Geological Survey measured its elevation as 0 ft (0 m) in 1981.