During the months leading up to Hope's return a large energy dome was built over the Bay Area to cut off the X-Men from escape or help. Once the dome was activated, Bastion opened a dimensional portal from his home reality to allow in more Nimrod-Series Sentinels. Cable used his last time jump to take X-Force to the future where they shut down all of the Nimrods in both the present and future. Their mission completed, attempted to us Bastion's time portal to return to the present.
Video: ISS mission completed! Tim Kopra, Yuri Malenchenko, Tim Peake return to Earth - https://www.therussophile.org/video-iss-mission-completed-tim-kopra-yuri-malenchenko-tim-peake-return-to-earth.html/