(April 17, 2024, 2:52 PM EDT) -- ANN ARBOR, Mich. — An engineering firm that is a defendant in the litigation over the lead-contaminated water crisis in Flint, Mich., has filed a brief in Michigan federal court arguing that the court should grant the firm summary judgment on the professional negligence claims brought by a group known as the Bellwether III plaintiffs because the firm says it did not owe them a duty of care as a matter of law....