A U.S. Marine launched the first Big Ideas Challenge last August to unleash the creativity and ingenuity of III MEF Marines and sailors against the most pressing challenges facing the Marine Corps. Marines are currently reviewing the submissions along with making recommendations on how to implement them. - A U.S. Marine launched the first Big Ideas Challenge last August to unleash the creativity and ingenuity of III MEF Marines and sailors against the most pressing challenges facing the Marine Corps. Marines are currently reviewing the submissions along with making recommendations on how to implement them.