Welcome to another battelfield easter egg brought to you by gameswithgreg.com and librenet.org and of course thanks to DICE for another awesome easter egg!
A note:
You can repeat this as many times as you like but you will need to leave the platform and come back to the same location you were standing as before.
The requirements for this easter egg are: Equip the Hanger 21 tag to your soldiers left tag and the alien trio tag to your right, you will also need the black dice camo equipped. Fly to the ‘F’ flag and run around to the top of the A01 roof. Find the green cargo container and stand on it. wait here for some time while you are attentively scanning the skies and you shall see a meteor shower or a meteor passing over head.
You find this dog tag randomly in the battlepacks. Good luck soilder!
You can see a meteor shower and the passing of a meteor on this map if you are watching the night sky vigilantly. The meteor passes overhead from southwest to north east and is a dull white/bull light. The meteor shower comes in from the east and is seen scattering upon impact with the atmosphere. watch closely as you can see the meteor fly overhead just shortly after the meteor breaks up.
is there anyway to get the alien tag or is it just random from battle packs
This is unlocked in a battlepack. I am not sure at time of writing which level you need to attain to receive the battlepack with the alien dogtag.