there are currently 2 drone-ships that works for SpaceX. 1 on the Pacific and 1 on the Atlantic. if falcon heavy was ever needed for any high-velocity missions such as new horizon, the two side boosters might need to land on drone-ships. if they come back to land, there might not be enough velocity to mach the requirements of the mission.
would they make 2 more drone-ships or will they just not reuse the boosters at all.