In April 2024, the components of the Mars Transit Vehicle are launched to Earth orbit on receiving the green light on the status of the systems on Mars. First, a Transit Habitat and a Mars Lander with an assembly crew on-board are launched into an orbit around the Earth. The assembly crew docks the Mars Lander to the Transit Habitat. Two propellant stages are launched a month later and are also connected. The first Mars crew, now fully trained, is launched into the same Earth orbit. In orbit the Mars One crew switches places with the Assembly Crew, who descend back to Earth. After a final check of systems on Mars and of the Transit Vehicle, engines of the Propellant Stages are fired and the Transit Vehicle is launched on a Mars Transit Trajectory. This is the point of no return; the crew is now bound to a 210-day flight to Mars. The Cargo for the second crew is launched to Mars in the same month.