Lockheed-Martin doesn't commit war crimes, the governments you elected or didn't, do the war crimes. They're a weapon and aeronautical reasearch, development, and manufacturing company. Building weapons and planes and jets is something every single nation on Earth does (or buy from those that do). This is just as silly as Coca-Cola sponsoring Pride, maybe even more so if you knew what they've been up to.
Corporations are not your friend or ally, rainbow or not. It doesn't matter what they support because they are all in some way evil. But if people want their support in Pride, why not?