DENVER--(BUSINESS WIRE)--Jun 3, 2025--
With undersea cables accounting for more than 99% of international data traffic, a robust terrestrial network is vital for ensuring seamless, high-capacity data flows across continents. Lumen Technologies (NYSE: LUMN) announced it will provide the terrestrial backhaul connectivity for the JUNO Trans-Pacific Cable System, the highest-capacity trans-Pacific cable linking Japan and the United States. Lumen’s fiber network will carry traffic from the cable’s U.S. landing point in Grover Beach, Ca., to two major points of presence (PoPs) in San Jose and Los Angeles— helping to revolutionize business operations and technological advancements in both countries.
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“An undersea cable can carry massive amounts of data across oceans, but it’s the strong terrestrial network that completes the journey,” said Ashley Haynes-Gaspar, Lumen EVP and Chief Revenue Officer. “Lumen designed and developed a dark fiber solution the JUNO system could quickly deploy to meet their launch date. Our critical fiber backbone enables the seamless high-capacity transport from Asia into the heart of the U.S. digital economy. This level of control, scale, and performance is exactly what global enterprises and cloud providers need to support the next generation of AI and data-driven innovation.”
The JUNO cable, operated by Seren Juno Network Co., Ltd., is 10,000 kilometers long and engineered to deliver up to 350 Tbps across 20 fiber pairs, using next-generation Space Division Multiplexing (SDM) technology. Lumen’s dark fiber backhaul gives JUNO custom, private network configurations. Connecting JUNO at the cable landing station to two critical PoPs, helps data reach major cloud hubs, data centers and enterprise networks across the U.S.
“Our partnership with Lumen is a critical milestone in delivering on JUNO’s promise to revolutionize trans-Pacific data transport,” said Yoshio Sato, CEO of Seren Juno Network Co., Ltd. “Lumen’s reach into major U.S. cloud hubs and its proven expertise in high-capacity fiber infrastructure make it an ideal partner as we bring the world closer through digital innovation.”
Businesses in both Japan and the US stand to benefit significantly from the increased bandwidth and reliable connections. Together, JUNO’s cable system and Lumen’s terrestrial network will create a powerful bridge between Asia and North America—supporting next-gen applications, enabling global scale for AI, and helping enterprises navigate the digital economy with agility and speed. Connecting directly into cloud regions, edge compute sites, and major data centers is only possible with strong terrestrial backhaul.
Learn more about Lumen Dark Fiber services.
About Lumen Technologies
Lumen is unleashing the world’s digital potential. We ignite business growth by connecting people, data, and applications – quickly, securely, and effortlessly. As the trusted network for AI, Lumen uses the scale of our network to help companies realize AI’s full potential. From metro connectivity to long-haul data transport to our edge cloud, security, managed service, and digital platform capabilities, we meet our customers’ needs today and as they build for tomorrow. For news and insights visit news.lumen.com, LinkedIn: /lumentechnologies, X: @lumentechco, Facebook: /lumentechnologies, Instagram: @lumentechnologies, and YouTube: /lumentechnologies.
The JUNO Trans-Pacific Cable System
Authorities in Southern California on Friday were racing to figure out how to prevent the explosion of a storage tank that has been leaking a hazardous chemical used to make plastic parts, as some 40,000 people were under evacuation orders in the area.
A storage tank holding between 6,000 and 7,000 gallons (22,700 and 26,500 liters) of methyl methacrylate overheated Thursday and began venting vapors into the air at an aerospace plastics facility in Garden Grove, a city in Orange County, the county’s fire authority said. The tank could fail and crack, releasing the chemical onto the ground, or it could explode, Garden Grove Fire Chief Craig Covey said Friday.
“This thing is going to fail, and we don’t know when,” Covey said. “We’re doing our best to figure out when or how we can prevent it.”
Officials ordered residents in Garden Grove to leave and expanded evacuations orders Friday to some residents of five other Orange County cities — Cypress, Stanton, Anaheim, Buena Park and Westminster — after being unable to stop the leak overnight on the tank at GKN Aerospace, which makes parts for commercial and military aircraft.
No injuries or deaths have been reported, authorities said.
In an update later Friday, Covey said authorities have been able to maintain the tank's temperature, buying time to figure out how to fix it.
Garden Grove is about 38 miles (61 kilometers) south of downtown Los Angeles and less than a mile from Disneyland's two theme parks, which were not under evacuation orders Friday. The city is known for its vibrant Vietnamese community, one of the largest of any U.S. city.
Danny Pham said he was deep in a dream when his roommate banged on his door around 7 a.m. Friday morning and told him he needed to leave immediately. Pham had been working late the night before at a Vietnamese restaurant and had not seen the news.
“It was shocking to me,” said Pham, who lives only a couple blocks from the plastics plant. “I didn’t know how serious it would be. I never knew that a thing like this could happen.”
He left minutes later, grabbing only his wallet and passport, and took shelter at a friend’s restaurant in a neighboring city.
By late Friday afternoon, Pham was still trying to figure out where he would stay the night and worrying that he had only the clothes on his back, possibly for days to come.
Covey said crews have created containment barriers with sandbags in case there is a chemical spill from the tank to prevent the toxic chemical from getting into storm drains or reaching creeks or the nearby ocean.
Dr. Regina Chinsio-Kwong, the county health officer, said if the chemical heats up, it can release a vapor that is harmful to people’s health. It can cause respiratory issues, itching and burning eyes, nausea and headaches.
Crews were initially successful and were able to neutralize one of two damaged tanks, but Covey said they determined Friday morning that the remaining tank was “in the biggest crisis.”
GKN Aerospace said specialized hazardous material teams are assessing the situation.
“There are no reports of injuries at this time and our priority remains the safety of our employees, responders, and the surrounding community,” a spokesperson said in an emailed statement. “We will provide verified updates as soon as more information becomes available.”
Kim Yen, a retiree in Garden Grove, was settling in for the night Thursday when she heard a sirenlike sound coming from her phone. An alert told her she needed to leave her home, which was just two blocks from the chemical leak.
As Yen drove to her daughter’s house in Seal Beach, she worried that others in the local Vietnamese community might ignore or not understand the evacuation alert because it was in English.
“They are family,” she said. “I’m hoping they stay alert and listen to the news and the authorities. This is scary.”
Yen, who is originally from Vietnam and has lived in Orange County since 1980, quickly stopped by her house Friday morning to grab important documents and medications. By then her neighborhood was “a ghost town,” and she was comforted to see police officers going door to door to make sure everyone had evacuated.
“We understand that this is frightening,” Garden Grove Mayor Stephanie Klopfenstein said. “But the evacuation orders are in place for your safety.”
Local Vietnamese television stations translated updates from officials and urged residents to take the situation seriously.
Rodriguez reported from San Francisco, Rush from Portland, Oregon, and Schoenbaum from Salt Lake City.
Water is sprayed on a tank that overheated at an aerospace plant in Garden Grove, Calif., Friday, May 22, 2026. (Jeff Gritchen/The Orange County Register via AP)
Orange County Fire Authority Division Chief Craig Covey speaks during a news conference at the Los Alamitos racetrack in Cypress, Calif., Friday, May 22, 2026, about hazmat situation in Garden Grove, Calif. (Jeff Gritchen/The Orange County Register via AP)
