McDonnell Douglas

A tough one. How do I not lean on the aircraft and missile imagery? I think a bird will work here, instead.

M + D + brighter colors + bird = McDonnell Douglas

A bit about McDonnell Douglas:
(from Wikipedia)

McDonnell Douglas was a major American aerospace manufacturing corporation and defense contractor formed by the merger of McDonnell Aircraft and the Douglas Aircraft Company in 1967. Between then and its own merger with Boeing in 1997, it produced a number of well-known commercial and military aircraft such as the DC-10 airliner and F-15 Eagle air-superiority fighter.

https://en.wikipedia.org/wiki/McDonnell_Douglas#/media/File:McDonnell_Douglas.svg