Spoilers
I think Konpeito missed an opportunity to include a recreation of the high school graduation group photo Baxter is in but with Troy, Karina, and Ronny, along with Baxter, Marcus and Milo, drawn in the new style in WIFL .
I think Marcus' haircut is out of regulations. It looks like he has more then the 2 inches of hair bulk on top of the head allowed for men by the current US Army grooming standards.