Internship at Lockheed Martin or fortune 500 manufacturing company?

I have 2 internship offers and one is at Lockheed Martin while the other is at a large fortune 500 manufacturing company. In an undergrad electrical engineer and I'm interested in what the the fortune 500 company does and what I want to do but I feel Lockheed will better boost my career. What do you think is the best choice?

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