When you think of Lockheed Martin (NYSE: LMT), the aerospace and defense giant, what comes to mind first? Fighter jets, probably -- F-16s and F-22s and F-35s (oh my!). Helicopters, probably -- if you're aware that Lockheed now owns Sikorsky. And spaceships, maybe -- because Lockheed Martin's Orion space capsule will soon sail past the moon, if NASA can ever get its Space Launch System off the ground.

But whatever you think when you hear "Lockheed Martin," I'd bet good money that you don't think about sonobuoys.

Image source: Getty Images.

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Source Fool.com