Complex sentence: Then, much like Apollo, the service module would be jettisoned and the CEV would descend for a landing via a system of three parachutes, two parachutes being enough for landing (although in the western United States rather than the Ocean).
Split into simpler sentences: Then, much like Apollo, the service module would be jettisoned and the CEV would descend for a landing via a system of three parachutes. Two parachutes are enough for landing (although in the western United States rather than the Ocean).