Yeah! want to try HER Airborne without the full game? Download the Demo then install HER and taste the fear! :P
To have a taste of what HER bring to the game, get the MOHA Demo around the net, HERE you can download from FilePlanet.
Then install the mod over the demo and play it like you used to play the multiplayer of Spearhead with Realism, then you gonna have the same feel, but with a lot better graphics and jumping stuff. :P