$1.$ Answer the following question in $510$ sentences. Assume that while operating the shuttle one day after the publication of the new policy, Frank had a heart attack, causing the shuttle to crash and the three guests inside to be injured. As part of the guests' lawsuit against the company for negligence, they allege that the company knew or should have known that Frank was physically unfit to operate a shuttle, was at high risk for a heart attack, and should have taken steps to ensure their safety. What responsibilities did the company have $(1)$ to protect customer safety and $(2)$ to ensure they are not liable for discriminatory conduct? Do you think the company should legally be responsible for the guests' injuries if the crash happened before crafting the policy? What about after crafting the policy? Explain why or why not.