Sierra Five was the code-name of an important Las Trinidad base of operations located in the Brazilian highlands.


In April 4 2021, it was raided by Artemis Global Security and the U.S. Army Ghost Recon team led by Captain Scott Mitchell. Reaper Flight protected the Ghosts as they raided and seized Las Trinidad's battle plans before withdrawing with the plans in the hands of the Ghosts. Sierra Five was left beyond major repairs after the joint assault by Artemis and the Ghosts.