Complex sentence: Scott, John, Virgil, Gordon, and Alan, who are the front-line members of International Rescue (IR), a secret organisation dedicated to saving human life from industrial disasters using technologically advanced vehicles for land, sea, air and space rescues.
Split into simpler sentences: Scott, John, Virgil, Gordon, and Alan, who form International Rescue (IR), a secret organisation dedicated to saving human life from industrial disasters. They are aided in their missions by technologically advanced vehicles used for land, sea, air and space rescues.