There's nothing like America's most expensive war machine ever

The initial squadron of America's most expensive weapons system ever built is on track for "initial combat use" by August 2016. Fourteen years ago this month, Lockheed Martin won the contract to build America's premier fifth generation stealth fighter jet.

Business Insider toured Lockheed Martin's massive production facility in Fort Worth, Texas, where the three F-35 Lightning II variant aircraft are designed and manufactured.

Here is a look at the unique capabilities of the F-35 variant aircraft.