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Lockheed Martin (NYSE: LMT), I'll bet, maker of the F-16 Falcon, the F-22 Raptor, and the F-35 Lightning II. Boeing (NYSE: BA), too, probably, with its F-15 Strike Eagles and F/A-18 Hornets.

After hours: March 14 at 7:57:08 PM EDT Loading Chart for LMT ...

Pre-Market: 9:27:03 a.m. EDT Loading Chart for LMT ...

After hours: 14 March at 7:57:08 pm GMT-4 Loading Chart for LMT ...

But what is it? Does the SR-72 “Darkstar” exist? What exactly is Lockheed Martin cooking up in the Skunk Works now? Let’s see what, if anything, we know about this highly secretive, ...