WILMINGTON, Del. - Affidavits indicate that a boiler maker designed and manufactured its products to meet U.S. Navy specifications, and the finding renders moot plaintiffs' challenge to the evidence, a Delaware federal judge held Sept. 26 (Larry Walkup and Betty Walkup v. Air & Liquid Systems Corp., a/k/a Buffalo Pumps Inc., et al., No. 12-1635, D. Del.).