Air Force Academy Superintendent Lt. Gen. Richard Clark could not define the term “demigender” when asked this week in Congress to defend the Academy supporting a fellowship opportunity for “demigender” people.

Under questioning from Rep. Matt Gaetz (R-FL), Clark confirmed that the population that makes up the fighting force are mostly men, and mostly cisgender men.

Gaetz asked him if he was familiar with the Brooke Owens Fellowship, promoted by the academy. Clark confirmed he was familiar with the fellowship.

Gaetz then asked him why, if he supported diversity in the military, the academy is promoting a fellowship that excludes cisgender persons from applying.