ST. LOUIS -- In an effort to keep its international fighter jet business churning, Boeing today revealed a new, advanced version of the multirole F-15 Eagle, which the company has been secretly developing for months. Dubbed the F-15 Silent Eagle, the fighter jet sports side-mounted conformal fuel tanks that can carry both air-to-air and air-to-ground weapons. Program officials claim the internal weapons bays, combined with canted vertical tails, special coating and advanced computer systems, turn the aircraft into a stealthy...