Sgt. Jennifer Suarez has much to smile about these days: she has beaten brain cancer and returned to active duty in the Marine Corps. She is now serving as the commanding officer’s driver at The Basic School aboard Marine Corps Base Quantico. - Sgt. Jennifer Suarez has much to smile about these days: she has beaten brain cancer and returned to active duty in the Marine Corps. She is now serving as the commanding officer’s driver at The Basic School aboard Marine Corps Base Quantico.