US Army Fictional skin + American pilot.
Based on one of the fictional liveries for Ka-50 II
USMC versions here:
https://www.digitalcombatsimulator.com/en/files/3327969/
https://www.digitalcombatsimulator.com/en/files/3328146/
Place the US Army folder in: Saved Games\DCS.openbeta\Liveries\Ka-50_3\
And select in the game under USA country.