McDonnell Douglas Helicopter Co., a division of...

McDonnell Douglas Helicopter Co., a division of McDonnell Douglas Corp., received an $804.9-million addition to an Army contract for AH-64A advanced attack helicopters . . . Colorado Springs, Colo.-based Kaiser Steel Corp. said that, after talks with the SEC, its has agreed to extend to 6 p.m. MST Friday the deadline for voting for directors by preferred shareholders . . . The world merchant shipping fleet shrank by more than 1,000 vessels to 75,266 in the year to June, Lloyd’s Register of Shipping reported.