From the movie, Aliens here is the DCS version of U.S. Colonial Marines UD-4L Cheyenne, "Bug Stomper".
"We are on an express elevator to Hell. Going down!"
To install:
Extract the archive so you have a folder called "Bug Stomper".
Paste that into your DCS World > CoreMods > aircraft > AV8BNA > Liveries > AV8BNA directory.