From Gamespot: "This will let you walk around the Hangar Module and sit in an Anvil Hornet F7C trainer ship that you can then take into flight in Arena Commander, a multiplayer and wave-based, combat oriented mode. Once activated the pass is valid until March 15, 2015."
Good till the 16th:
Login or sign-up: Here
Enter promo code: PAXEASTFREEFLY2K15
Enjoy the 20GB download
Have fun!!!