In a photograph taken during ground-testing of the conventional take-off and landing (CTOL) version of Pratt & Whitney's F135 engine for the Lockheed Martin F-35 Lightning II, the F135's twin air intakes can clearly be seen towards the left of the picture. In this test, P&W ran the engine up to 'maximum augmented thrust,' testing the functionality of the engine's afterburner. Credit: Pratt & Whitney
