Complex sentence: To extend its range, the F-15E is fitted with two conformal fuel tanks (CFTs) that hug the fuselage, producing lower drag than conventional underwing/underbelly drop tanks.
Split into simpler sentences: To extend its range, the F-15E is fitted with two conformal fuel tanks (CFTs) that hug the fuselage. These produce lower drag than conventional underwing/underbelly drop tanks.