Board Thread:Questions and Answers/@comment-71.135.100.15-20130719025805

I was playing in alert mode and had already cycled through a few waves of guards. I was prone behind some boxes and when I peeked around the boxes for the enemy my entire screen flashed a geisha face. I searched for what it meant online and even though this happened years ago, I still havent found anything about it or have been able to recreate it. Does anyone have any insite to what caused it and/or what it means? 