http://www.pcgamer.com/rainbow-six-siege-operation-chimeras-new-operators-bring-drones-and-nanobots-to-the-fight/

Ubisoft has shared a sneak peek into the upcoming Rainbow Six Siege Year 3 Season 1 expansion Operation Chimera, which will add a pair of new operators to the game and the co-op Outbreak mode, set on a new map based in a small town in New Mexico that's struggling with some unusual problems. 

The nationalities of the new operators—one from Russia, the other from France—were revealed in November of last year, but today's tease gives the first details about what they bring to the party. The French operator, with an astounding service record and a long list of regrets (I have no idea how that impacts TTK), uses a drone to maintain the perimeter in quarantined areas, while the Russian specialist (who may not actually be Russian, the announcement says they moved to the country to pursue their studies) employs "self-dissolving nanobots" that can apparently be put to use in a number of different ways. Maybe these nanobots provide a temporary buff to him, or teammates?