Wendy Rush is the wife of Stockton Rush, the CEO of OceanGate. He is among the five people on board the missing Titanic tourist sub. Her great-great-grandparents died in the 1912 disaster.
Marc Hagle, 74, and his wife Sharon, 73, sued OceanGate CEO Stockton Rush in February, alleging that he misled them about the Titanic trip which they paid for, and then refused to hand back their money.
Leaders in the submersible industry sent a letter to OceanGate CEO Stockton Rush - who is currently missing along with the vessel - urging him to take caution.