Polo Field Testing a New Mission?

Hey penguins today during #Field Friday Polo Field Tweeted some pictures of some spy igloos and in most of them he had the briefcase at the top of the screen.

I've seen some fun cityscape igloos this month! twitter.com/polofield/stat…
— Polo Field (@polofield) April 19, 2013

Here is a close up

Is Polo Field doing Operation Hot Sauce again or testing a new mission?

-Georgepeng10