Phil Coulson's Mission
While a S.H.I.E.L.D. agent, Phil Coulson was sent to the Burkov Mining Facility to retrieve an artifact labeled by S.H.I.E.L.D. as an 0-8-4. Melinda May was sent to assist him. Together, they infiltrated the facility and located the vault containing the 0-8-4.
However, SVR soldiers, including Anton Ivanov, were also sent to retrieve the object. While Coulson distracted them, May stole the 0-8-4 and drove away from the place. Coulson was captured by the SVR soldiers only to be released by May minutes later. The two S.H.I.E.L.D. agents then escaped the mining facility while the SVR soldiers were arrested, interrogated and executed for having failed to their assignment. Only Ivanov survived and swore to avenge for what had happened in the mining facility.
Journey to the Past
Fourteen years later, Anton Ivanov eventually got the chance of exacting revenge on Phil Coulson. He purchased the abandoned mining facility; then, he dug out the bodies of his fallen comrades, made them wear SVR uniforms and left them in the Burkov Mining Facility in the very building Coulson and Melinda May had infiltrated during their mission.
While trying to find S.H.I.E.L.D. Director Jeffrey Mace who had been kidnapped by Ivanov, Coulson discovered a picture of the mining facility in Nome, Alaska. Knowing that it was his only possible connection to Ivanov, Coulson took his team to the mining facility, where they found the skeletons of the former SVR soldiers. One of them had a telephone embedded in his jaws. When the phone rang, Coulson answered the call from Ivanov, who blamed him for the death of his comrades and threatened that Coulson and his team would soon suffer the same fate.