Jane Foster received a phone call offering her a job position in an astrophysics laboratory in Tromsø, which Darcy Lewis encouraged her to accept. Unbeknownst to both, the offer had been arranged by S.H.I.E.L.D., as a way to protect Foster from Loki, who arrived to Earth using the Tesseract.
Two days after arriving at Tromsø, Foster demanded to know why Lewis and her were assigned to the laboratory, as it seemed that none knew what was their purpose at the facility. Lewis watched a news broadcast about the alien invasion taking place at New York City at that moment, and they witnessed Thor battling the Chitauri alongside the Avengers.
The scientists at the laboratory were worried, as Foster was not supposed to watch those images, but Lewis told them their firewall and internet security protocols were not enough to prevent it. Foster realized S.H.I.E.L.D. was behind the position at Tromsø, and demanded to know what was happening, or she would call to agent Phil Coulson to know about it, but first she wanted to see what happened at New York.