Lockheed Martin managed to disclose all the issues with its F-35 in one simple sentence

Earlier this week, Lockheed Martin, the Pentagon's top weapons supplier and manufacturer of America's most expensive weapons system, posted better than expected quarterly results.

Considered a bellwether for the US defense sector, Lockheed Martin's eye sore takes shape in the now nearly $400 billion F-35 Lightning II stealth fighter jet.

In the company's latest 10-K filed with the SEC, the world's largest defense contractor concisely addressed the troubled F-35.

Here's the simple disclosure from Lockheed Martin:

"Current programs include, but are not limited to, ... "

The F-35 is one of the most challenged weapons programs in the history of the Department of Defense. Since its inception in 2001, the F-35 has experienced setbacks that include faulty ejection seats, software delays, helmet display issues, and inability to dogfight.