NEW YORK (AP) — Amtrak CEO Stephen Gardner abruptly resigned from his top post at the U.S. passenger railroad this week.

Wednesday’s announcement signaled that the leadership change came down to Amtrak maintaining support from U.S. President Donald Trump. In a statement, Gardner said he was stepping down “to ensure that Amtrak continues to enjoy the full faith and confidence of this administration.”

A successor for Gardner was not immediately named.

Gardner’s departure also arrives just weeks after billionaire Elon Musk floated the idea of privatizing Amtrak, as well as the U.S. Postal Service, at a Morgan Stanley tech conference earlier this month.

Musk, who has been at the forefront of the Trump administration’s aggressive push to downsize the federal government through the Department of Government Efficiency, reportedly called Amtrak “kind of embarrassing” — while comparing the U.S. carrier to passenger rails seen in other countries, such as bullet trains in China.

When reached for comment on Thursday, the Transportation Department did not provide further details specific to Gardner’s resignation. A statement from Transportation Secretary Sean Duffy took aim at Amtrak’s Washington D.C. operations — calling on Amtrak’s leadership to “clean up Union Station” and “rid of our nation’s treasures of homelessness and crime.”

Citing unnamed sources familiar with the matter, Reuters reported Wednesday that Gardner was asked to step down at the request of Trump, who previously sought to cut Amtrak’s budget in his first term.

When reached Thursday, Amtrak declined to comment on whether Gardner was asked to resign. But in Wednesday’s announcement, the Amtrak board stated that it looked forward to “working with President Trump and Secretary Duffy as we build the world-class passenger rail system this country deserves.”

Gardner first got his start with Amtrak as an intern back in the 90s. He later returned and worked at the rail service for the past 16 years, holding the title of CEO since January 2022.

Amtrak struggled during the height of the COVID-19 pandemic — with the railroad seeing plummeting ridership as people across the country stopped traveling and stayed home. But passenger numbers have recently rebounded to pre-pandemic levels.

For the 2024 fiscal year, Amtrak reported an all-time ridership record of 32.8 million customer trips. That’s up 15% from 2023 — and surpasses Amtrak’s previous record of 32.4 million passengers in 2019.

Ticket revenue for the 2024 fiscal year totaled $2.5 billion, a 9% jump from 2023. And Amtrak posted an adjusted operated loss of $705.2 million, also a 9% improvement year-over-year.

DALLAS (AP) — Newly released documents related to President John F. Kennedy’s assassination in 1963 gave curious readers more details Wednesday into Cold War-era covert U.S. operations in other nations but didn’t initially lend credence to long-circulating conspiracy theories about who killed JFK.

Assessments of the roughly 2,200 files posted by the U.S. National Archives and Records Administration on its website came with a huge caveat: No one had enough time as of Wednesday to review more than a small fraction of them. The vast majority of the National Archives’ more than 6 million pages of records, photographs, motion pictures, sound recordings and artifacts related to the assassination have previously been released.

An initial Associated Press review of more than 63,000 pages of records released this week shows that some were not directly related to the assassination but rather dealt with covert CIA operations, particularly in Cuba. And nothing in the first documents examined undercut the conclusion that Kennedy assassin Lee Harvey Oswald was the lone gunman in Dallas on Nov. 22, 1963.

“Nothing points to a second gunman,” said Philip Shenon, who wrote a 2013 book about the assassination. “I haven’t seen any big blockbusters that rewrite the essential history of the assassination, but it is very early.”

Kennedy was killed on a visit to Dallas, when his motorcade was finishing its parade route downtown and shots rang out from the Texas School Book Depository building. Police arrested the 24-year-old Oswald, a former Marine who had positioned himself from a sniper’s perch on the sixth floor. Two days later Jack Ruby, a nightclub owner, fatally shot Oswald during a jail transfer broadcast live on television.

Historians hope for new details about the man who killed JFK

A year after the assassination, the Warren Commission, established by President Lyndon B. Johnson to investigate, concluded that Oswald acted alone and there was no evidence of a conspiracy. But critics of the commission still spun a web of alternative theories.

Historians are hoping for details fleshing out Oswald’s activities before the assassination and what the CIA and FBI knew about him beforehand.

Shenon pointed Wednesday to previously released documents about a trip Oswald made to Mexico City at the end of September 1963. Records show Oswald intended to contact the Soviet Union’s embassy there after living as a U.S. defector in the U.S.S.R. from October 1959 until June 1962.

Shenon said the U.S. government may have kept information about what it knew about Oswald before the assassination secret to hide what he described as officials’ possible “incompetence and laziness.”

“The CIA had Oswald under pretty aggressive surveillance while he was there and this was just several weeks before the assassination,” Shenon said. “There’s reason to believe he talked openly about killing Kennedy in Mexico City and that people overheard him say that.”

Speculation about such details surrounding Kennedy’s assassination has been intense over the decades, generating countless conspiracy theories about multiple shooters and involvement by the Soviet Union, the mafia and the CIA. The new release fueled rampant online speculation and sent people scurrying to read the documents and share online what they might mean.

Many documents already were public but information had been redacted

The latest release of documents followed an order by President Donald Trump, though most of the records were made public previously with redactions. Before Tuesday, researchers had estimated that 3,000 to 3,500 files were still unreleased, either wholly or partially. Last month, the FBI said it had discovered about 2,400 new records related to the assassination.

Jefferson Morley, vice president of the Mary Ferrell Foundation, a repository for files related to the assassination, said in a statement posted on the social platform X that much of the “rampant overclassification of trivial information has been eliminated” from the documents.

The timing of the release drew criticism from a Kennedy grandson, Jack Schlossberg. In a post on X, Schlossberg said the Trump administration did not notify family members before the records were made public.

“a total surprise, and not shocker !!” Schlossberg wrote.

Trump issued his executive order to release the files on Jan. 23.

A boon to historians of the Cold War

The latest release also is a boon to historians of the Cold War. Timothy Naftali, an adjunct professor at Columbia University who is writing a book about JFK’s presidency, said scholars now appear to have more details about U.S. intelligence activities under Kennedy than under any other president.

For example, in October 1975, U.S. senators were investigating what the CIA knew about Oswald, and an October 1975 memo said they considered the agency “not forthcoming.”

A version of that memo released in 2023 redacted the name of the CIA’s security contact on Oswald in Mexico, as well as the identity of someone behind the “penetration of the Cuban embassy” there. The latest version shows that the security contact was the president of Mexico in 1975, Luis Echeverria Alvarez, who died in 2022, and that the Mexican government itself penetrated the Cuban embassy.

Also, Naftali said, before the latest release, the government had made public copies of Johnson’s presidential “daily checklist” of highly sensitive foreign intelligence in the days after Kennedy’s assassination, but with much of the material redacted. Now, he said, people can read what Johnson read.

“It’s quite remarkable to be able to walk through that secret world,” he said.

Some records provide small details about covert operations

Documents show that in December 1963, the CIA director’s office was receiving messages from and replying to operatives in Cuba seeking to undermine the government under Fidel Castro. One, on Dec. 9, 1963, relayed a message to the director from Cuba: “TODAY RECD THE MAGNUM PISTOLS BUT NO BULLETS.”

“You’re getting both a bird’s-eye view of U.S. foreign policy, and you’re also getting a snail’s eye view of covert action, right there on the ground,” Naftali said.

In a previously released April 1975 memo, the CIA downplayed what it knew about Oswald’s visit to Mexico City before the assassination. The memo said the CIA recorded three phone calls between Oswald and a guard at the Soviet embassy, but only in the last one did Oswald identify himself.

“We’re now discovering how much more the CIA and the FBI knew before the assassination about Oswald,” Shenon said. “And the question is, why didn’t they act on the information in their own files?”

SAN FRANCISCO (AP) — Google has struck a deal to buy cybersecurity firm Wiz for $32 billion in what would be the tech giant’s biggest-ever acquisition at the same time it’s facing a potential breakup of its internet empire.

The proposed takeover announced Tuesday is part of Google’s aggressive expansion into cloud computing during an artificial intelligence boom. The frenzy is driving demand for data centers that provide the computing power for AI technology and intensifying the competition in that space among Google and two other tech powerhouses, Microsoft and Amazon.

If the all-cash transaction is approved by regulators, Wiz will join Google Cloud — an increasingly important part of its business separate from the search and advertising operations that account for most of the $350 billion annual revenue at Google’s parent company, Alphabet.

With the advent of AI, however, the cloud division has become a rising star at Google. Annual revenue in the division was $26.3 billion in 2022, and soared 64% to $43.2 billion last year.

Wiz, a five-year-old startup founded by four longtime friends who met in the Israeli army when they were still teenagers, is on track for an estimated $1 billion in revenue this year. After getting its start in Israel in 2020, Wiz now oversees an operation that makes security tools protecting the information stored in data centers from its current headquarters in New York.

“Wiz and Google Cloud are both fueled by the belief that cloud security needs to be easier, more accessible, more intelligent, and democratized, so more organizations can adopt and use cloud and AI securely,” Wiz CEO Assaf Rappaport wrote in a blog post.

In a Tuesday conference call, Google CEO Sundar Pichai predicted Cloud division’s addition of Wiz will result in even better security at a lower cost than can be provided now. That prediction may have been aimed as much at regulators likely to scrutinize how the deal will affect competition and pricing, as much as at prospective customers.

Google had been courting Wiz for some time before finally settling on a price that’s much richer than a reported $23 billion bid that was rejected last July. At that time, Wiz signaled it would instead pivot back to a previously-planned initial public offering. But recent volatility in the stock market has chilled the IPO market, and now Rappaport said Wiz expects to “innovate even faster” by becoming a part of Google.

Wedbush analysts called Google’s move to buy Wiz “a shot across the bow” at other tech giants, particularly Microsoft and Amazon, who have already made big bets on cyber security as the fight to dominate cloud computing intensifies. Google had fallen behind its competition in the cloud space, Wedbush said, but the acquisition of Wiz could alter the parameters.

The bid Tuesday easily eclipses the current largest acquisition in Google’s 26-year history — a $12.5 billion takeover of Motorola Mobility in 2012 that didn’t pay off the way that the Mountain View, California, company had hoped. The $32 billion purchase of Wiz would also go down as the biggest-ever cybersecurity acquisition and rank among the 20 most expensive takeovers of a software company in history, according to Mergermarket, a financial intelligence service.

As often happens with high-priced acquisitions, investors reacted coolly to Tuesday’s news. Alphabet’s shares declined 2% to close at $160.67.

Some of Google’s other acquisitions have turned into gold mines, most notably its $1.76 billion purchase of online video pioneer YouTube in 2006 and its $3.1 billion takeover of advertising technology platform DoubleClick in 2008. A $5.4 billion purchase of another security firm, Mandiant, in 2022 also helped fuel the recent growth of Google’s Cloud division, which posted an operating profit of $6.1 billion last year.

Google’s DoubleClick deal is now part of an antitrust case filed by the U.S. Justice Department targeting Google’s technology for distributing ads across the internet. A ruling in that case, involving allegations that Google illegally abused its power to manipulate digital ad prices, is expected this year.

Regulators in the U.S. and abroad are targeting Google on other fronts, too.

Last year, a federal judge in another case brought by the Justice Department last year concluded Google had turned its ubiquitous search engine into an illegal monopoly. The penalization phase of that trial begins next month.

The Justice Department is seeking a rebuke that would include a requirement for Google to sell its Chrome web browser and would ban the company from making agreements with Apple and other companies to make its search engine the default tool for finding online information on the iPhone and other devices.

The Wiz deal will also get a close look from antitrust regulators. While many expect the Trump administration to welcome more dealmaking than occurred during the previous years, it has also expressed leeriness about Big Tech getting any bigger. Andrew Ferguson, the Trump administration’s Federal Trade Commission Chairman, has been particularly outspoken about his resolve to keep Big Tech on a short leash.

The deal raises antitrust concerns due to the potential impact on standalone cyber security vendors, as well as potential disruption for bigger rivals. Still, Wedbush’s analysts note the industry is “ripe for consolidation” — which could pose “massive growth opportunities on the horizon heading into this AI Revolution.”

Antitrust worries were also believed among the reasons Wiz called off sales talks with Google last year while President Joe Biden’s administration was seeking to block a variety of tech deals. Agreeing to a sale now indicates both Google and Wiz are more confident the deal will gain U.S. approval under the Trump administration, Mergermarket analysts Kevin Ketcham and Kevin McCaffrey wrote in a Tuesday note.

“The two sides likely wouldn’t have struck the deal if they didn’t at least see a potential path to closing,” Ketcham and McCaffrey wrote.

But the business watchdog group Demand Progress Education Fund urged the Trump administration to block Google’s takeover attempt. “It’s time to show the public whether they have the guts to step in and stop a big fish from being gobbled up by one of the biggest fishes in the pond,” said Emily Peterson-Cassin, the group’s director of corporate power.

If they get the regulatory greenlight and meet several conditions spelled out in their agreement, Google and Wiz expect the deal to close in 2026.