Travelers transfer into a cult preparing for mass suicide. MacLaren's team, the cult, and many other travelers, including senior engineer Bloom, meet at the antimatter facility. Bloom reveals that the future has been subtly rewritten and is not as united as it once was. Dosed with antitoxin, they release a toxic cloud to force a local evacuation. Gleason interrogates Delaney until MacLaren returns her to the facility and explains the nature of travelers. Gleason discovers Delaney's escape and prepares to return to her lab. Using the antimatter to power an x-ray laser, the travelers intend to deflect asteroid Helios 685, saving millions of lives and preventing the environmental catastrophes and devastating wars that led to their dark future. Deflecting Helios has been the Director's main goal, even though it could possibly prevent the travelers' own births in the future. Gleason leads an assault, killing most of the cult travelers and Bloom before she can fire the laser. However, travelers transfer into his soldiers and eventually into him, sacrificing themselves to complete the mission. The traveler within Gleason fires the laser while MacLaren and his team save Delaney from the antimatter explosion on Bloom's orders. MacLaren is unsure of the mission's success, as his team remains in the present.

Three high-ranking Travelers are sent back by the Director to put Grace on trial for violating protocols, overwriting a person who was not assigned to be her host, and sabotaging the Grand Plan. Mac and the team must give testimony at the trial that will determine if she should be overwritten or not. Meanwhile, the Faction is trying to replenish its numbers by overwriting people with the stored minds in the Quantum Frame. It transpires the trial was staged by the Director to flush out a Faction member from within the three Travelers judging Grace, which it successfully does, this leading to Mac's team securing the Quantum Frame.
The Faction sets off nuclear blasts that destroy all of the Travelers' archives outside the US. David, left for dead by the Faction in the last surviving archive, is the only person who can disarm the nuclear device. He succeeds but is exposed to lethal radiation. Kat's suspicions about MacLaren, temporarily allayed, surge again and she throws him out – for her the marriage is over as she feels he is no longer the man she first met. Jeff tries to escape from interrogation by 001; he is eventually found having been walled up. Marcy hopes the Director will send a Traveler medical team to save David but no help arrives. In the moment before he dies, David conveys a message from the Director: "Protocol Omega."
After asking Marcy to move out, David admits he cannot bear to be without her. She tells him she is dying, and they kiss. Trevor tries to connect with his father. Jeff files assault charges, preventing Carly from finding a job. She asks him to take the baby for an afternoon, unaware he has tipped Kat off to Carly's relationship with MacLaren. Under orders, a traveler murders her host's Cabinet-member husband, and instructs MacLaren to board a flight as Congressman Bishop's seatmate. In flight, MacLaren learns he is to activate a stasis field to save himself and Bishop, while all others aboard will die in a crash. MacLaren discovers Kat followed him on board, believing she would witness his infidelity. He instructs Kat and Bishop to use the stasis device, and attempts to survive impact unaided, using only Philip's knowledge of the crash. At the crash site, the team resuscitate Kat and Bishop, and Bishop is overwritten. To Carly's dismay, MacLaren is taken away by traveler paramedics before the team can reach him.
The first season of Travelers has a score of 100% on Rotten Tomatoes based on nine reviews with an average rating of 8.0/10.[9] Neil Genzlinger, writing for The New York Times, described the first season as "tasty", and "enjoyable science fiction", with "some attention-grabbing flourishes and fine acting".[10] Hanh Nguyen, writing for IndieWire, describes the series as "fun and freaky," finding the series' appeal "in how the core group of five travelers adjust to life in our present," noting the "human nature in the travelers".[11] Lawrence Devoe, of TheaterByte.com, called the series "tautly paced and suspenseful" with "well-developed characters", declaring that "Brad Wright has a real knack for creating futuristic series".[12] Evan Narcisse, reviewing the first five episodes for io9, appreciated the moral dilemmas offered by the series premise and the awkwardness presented by the characters' interactions with their hosts' friends, colleagues, lovers, or caretakers: "This is a superhero show in double disguise, offering up clever explorations of the secret identity concept that touch on the guilt and contortions that come with living a double life."[13] Netflix announced that the series was one of its "most devoured" series in 2017.[14]
In November 2010, Travelers entered into a joint venture agreement under which the company would invest in J. Malucelli Participações em Seguros e Resseguros S.A., the market leader in the surety insurance business in Brazil. The transaction closed in June 2011 with Travelers acquiring a 43.4 percent interest. Travelers' investment in newly issued shares significantly increased J. Malucelli's capital level, positioning it for substantial growth in Brazil. At the time, Travelers had the option to increase its investment to retain a 49.5 percent interest, which the company later did in 2012.[23]
When you work at Travelers, life’s most important moments become your life’s work. That means helping families feel secure, businesses to prosper, knowing that you’ve made a difference, and feeling like you belong to something bigger. It also means being part of a team that’s evolving to meet changing needs – from customer service to data science and beyond. If that’s more than you imagined in an insurance career, it’s time to join us at Travelers.
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