A lot of great TrueHD 7.1 and DTS-HD MA 7.1 non-ATMOS movies give us the same thing - immersive/enveloping you-are-there atmospheric surround sound. They can put dialogue and sound discretely in all 5 speakers (in 5.1).
So if aircrafts fly or hover directly above you and they don't make any sound from your overhead speakers, then I can't say that's "ATMOS". I can say it's an awesome TrueHD 7.1 soundtrack.
In contrast, in "Civil War" you can hear aircrafts from your overhead speakers very prominently pan from Front to Back, Left to Right, etc.