Operations Chief Janet Walker was a Systems Alliance NCO who was involved in the N7 Special Forces and trained the new generations of N7 soldiers. She was part of 7th Naval Battalion. She fought in the First Contact War, under the command of David Anderson. Walker was famous for being the Commanding Officer of Shepard during the majority Skyllian Wars. She was honorably discharged after the Skyllian Blitz but returned shortly later to train the new generations of N7.