Nemesis: Retaliation – Support Squad Expansion Sundrop (Gamefound)

Contains two additional playable characters for Nemesis: Retaliation:

The UAV Operator is responsible for operating and controlling crewless aircraft that perform surveillance, reconnaissance, attack, or support tasks. He is super proficient in the use of hardware and software, as well as in analyzing data and images from the drone.
Sharpshooters have been part of military forces for many years, so this is an obvious choice as a new potential squad member. Of course, a close environment is not the perfect place for that type of specialist. However, a soldier with a steady hand and an eagle eye can still be very useful, especially with his beloved sniper rifle.

— description from the publisher.