Video Captures Obama in Secretive Exchange of Notes With Air Force General

Take a look at this picture from Friday, April 29th.  President Obama is greeting Brig. Gen. Ed Wilson after Air Force One landed at Cape Canaveral:

Seems pretty ordinary, right?  A typical tarmac greet for the Commander-in-Chief.

But there may be a little more to the brief moment at the bottom of the airstairs.

The state-owned Italian television channel Rai News has posted a video that highlights a curious exchange between the two men:

(h/t Drudge Report)

Rai News captions their YouTube video this way:

The italian channel Rainews discovered an exchange of two small pieces of paper between President Obama and General Wilson when on April 29 the American President, few hours after he gave the order to kill Osama Bin Laden, landed at Cape Canaveral airport. While shaking hands with the general President Obama passed a small piece of paper and received another one in exchange.

Let's break it down by a few freeze frames.

Here Obama makes the initial move to have the note/paper/item in his hand:

He then positions it to pass to Wilson:

Wilson stretches out his hand to receive the item:

Obama places the item in Wilson's hand:

Here's a close-up from the actual AP photograph of that moment:

Wilson then moves to retrieve his item for the President:

Here comes the pass:

Pass complete, Obama moves to place the item in his pocket:

Slick.

So far the "challenge coin" theory is leading in comments.  Thoughts?