As F-35 Begins Operations, More Hurdles Loom.

The article focuses on challenges associated with operations of the F-35 operations with the U.S. Marine Corps. It informs that the aircraft faces major testing challenges, including continued trials of the 3F software package required for external weapons stores. It presents views of Jon Davis, the Marines' deputy commandant for aviation, who said that main goal of the F-35 operation is to maintain an 80 percent mission-capable rate.