"Didn't even feel it!" the chief master sergeant of the Air Force tweeted, along with a thumbs-up selfie.
The change to gender-neutral language reportedly reflects the fact that women can now serve in the elite unit.
Since deleted after a call from Military Times, the Tweet, posted Tuesday night, hit a sour note among some social media users.
Among the tweets were one from President Trump's official re-election campaign and another in which the president disparaged the Democratic Party and presidential candidate Bernie Sanders.