Complex sentence: Tier 1 Group has claimed that they will be training U.S. Marines form Camp Lejeune, North Carolina that was why they wanted a facility in Jones County near the base, but there has been some conflicting information.
Split into simpler sentences: Tier 1 Group has claimed that they will be training U.S. Marines form Camp Lejeune, North Carolina. They wanted a facility in Jones County near the base, but there has been some conflicting information.