Under the Federal Rules of Civil Procedure, “an action may be dismissed at the plaintiff’s request only by court order, on terms that the court considers proper.” Unless the order states otherwise, a dismissal under Rule 41(a)(2) is without prejudice. A district court’s decisions with respect to a motion for voluntary dismissal under Rule 41(a)(2) are reviewed for abuse of discretion. It is an abuse of discretion for the district court to rely on erroneous findings of fact, apply the wrong legal standard, misapply the correct legal standard, or make a clear error in judgment.