NATIONAL HARBOR, Md,--The Navy is reviewing various options to improve the capabilities of its fleet of F/A-18 Super Hornets and EA-18G Growlers that include ways to add more fuel to expand range and more weapons, the program manager for the aircraft said Monday. Naval Air Systems Command (NAVAIR) has been analyzing the possibility of adding conformal fuel tanks to the fuselage, as well as an external weapons pod and steps to reduce radar signature, Capt. Frank Morley said. Morley said…