The trailer has some action highlights - like the zip line stuff, and Cap and the Invaders/Howling Commandoes on the train - but what I like best is the scene with the grenade. The fact that the movie gets that right, that it understands who Steve Rogers is even before the Super Soldier Serum, makes me think this movie will get most of everything right. Except some of those FX - looks like some cheap rear projection in some of these scenes. But I’m being nitpicky! Everything else looks delightful!