Your link did not work for me... but there was this in today's news:
https://www.yahoo.com/news/u-military-f-35-fighter-jet-crashes-south-181444331--sector.html

A U.S. military F-35B fighter jet crashed near the Marine Corps Air Station Beaufort in South Carolina on Friday, for reasons that are under investigation, local law officials and the U.S. military said.

The pilot, the only person aboard the craft, ejected safely and was being checked for injuries, said a Pentagon spokesman, adding that there were no other injuries.

The jet crashed just before noon local time. It was a Lockheed Martin F-35B, a short take-off/vertical landing version of the F-35, said a U.S. military official, speaking on condition of anonymity.

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https://www.bloomberg.com/news/articles/2017-07-10/f-35-program-costs-jump-to-406-billion-in-new-pentagon-estimate

The cost of the F-35 jet program, already the most expensive U.S. weapons program ever, is estimated to climb further as the plane’s production period gets extended, according to figures submitted to Congress on Monday.

Total acquisition costs for Lockheed Martin Corp.’s next-generation fighter may rise about 7 percent to $406.5 billion, according to figures in a document known as a Selected Acquisition Report. That’s a reversal after several years of estimates that had declined to $379 billion recently from a previous high of $398.5 billion in early 2014.

400 billion would pay for 5,000,000 students to go to 4 years of university- which investment would do more for America?