Seemingly out of place on a list of favorite energy stocks, Lockheed Martin (NYSE: LMT) is an unusual pick here. In this video, Fool.com contributor Aimee Duffy explains why Lockheed's initiatives in water filtration, modular nuclear reactors, and LNG storage tanks make it so crucial to our energy future. Ultimately, Aimee suggests the company could end up more like General Electric (NYSE: GE) than a pure play energy stock, but its work is important nonetheless.