Modular, reusable design is a design methodology that demands serious consideration. SpaceX have put the associated advantages to work with their Falcon family of spacecraft. The Falcon Heavy long-range heavy payload rocket, their latest effort, is built from existing Falcon models. Moreover, the Falcon rockets are engineered to land in a controlled manner, so that they can be reused for future missions. In their next mission, SpaceX will launch a Falcon - and land it - equipped with a reused engine. If successful, it will be another first for SpaceX, a name associated with pushing the limits of space exploration.