Perestroika was a newly constructed Leviathan base, serving as the organization's main headquarters after the end of the Hydra-Leviathan war that decimated both sides. Orion and Valentina Allegra de Fontaine were were discussing the status of the remnants of Hydra which had broken up into two factions, preparing their final assault.
Suddenly every Leviathan operative started to die, with either their heads popping or bodies exploding, due to Nick Fury sabotaging how the chambers worked which corrupted the enhancement done to them. Resulting in the agents burning out faster and therefore the mass die off. The only Leviathan operatives left alive were Orion himself and Contessa Fontaine.