Top 5 Largest Aerospace Companies in the US

3. Lockheed Martin Corporation (NYSE:LMT)

Lockheed Martin is not just an aerospace company but also an arms, security, defense and advanced technologies company, which is also perhaps the most famous company known mainly for its defense contributions to the military. Based on just being a defense contractor, Lockheed Martin is the biggest company in the world, and most of its revenue is derived from the military; approximately 78% back in 2013. In 2019, the company earned revenues of $59.8 billion and 110,000 employees, and has won the aforementioned Collier trophy five times.

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