Originally Posted by cherokeesam
And at least three Avengers, too.
That being said, I seriously doubt it's the Helicarrier in that concept art. Triskelion. Or even a HYDRA base. That symbol on the ground could just as easily be HYDRA as SHIELD.
At least 3 Avengers? Did I miss something, or are you counting Falcon as a future Avenger?