Does 'Iron Man 2' Trailer Reveal Plot Detail For Scarlett Johansson's Black Widow?

We were all over the official "Iron Man 2" trailer when it hit the 'Net a few weeks ago, giving you the five most important scenes from the trailer, a shot-by-shot analysis and even some thoughts on what the "Iron Man 2" trailer reveals about the film's plot. But even after all of that coverage, there's something we missed.

Right around the 1:40 mark in the trailer, there's a scene featuring Scarlett Johansson in action as Black Widow, and some keen-eyed observers around the InterWebs have discovered what could be a major plot point revealed in a few frames. Check it out for yourself:

Iron Man 2

Notice anything? Well, if you're willing to brave a SPOILER ALERT, go ahead and read on for what could be an intriguing plot point revealed in this scene.

If you need a hint (and I did), cast your attention to Scarlett Johansson's left arm, just below the shoulder of her Black Widow costume. Notice the patch partly hidden by her hair? Does it look familiar?

We could be wrong, but it sure does look a lot like the S.H.I.E.L.D. insignia, doesn't it? Check it out:

Iron Man 2

Can you say "Black Widow: Agent of S.H.I.E.L.D."?

However, it's worth pointing out that Johansson's character didn't appear to have the symbol on her sleeve in any of the previous images we've seen of her in costume as Black Widow. Neither the first image of Johansson as Black Widow nor the most recent shot of her in costume seem to feature the patch.

If that is indeed a S.H.I.E.L.D. emblem, it looks like Nick Fury could be receiving some help from Russian superspy Natasha Romanoff when "Iron Man 2" comes to theaters in May 2010.

What do you think this image reveals about the "Iron Man 2" plot? Does it reveal anything at all? Let us know what you think in the comment section or on Twitter!