"I'm just wondering if the engineers had fun piecing it back together for all of that time. It had some pretty heavy damage on it when I left it."
Walter goes to check on the Shikra, and is told to come back in three days.
Three days later, he goes again to check on it in its hangar to find out that first, there are two Shikras; and second, one of them has had the forest green replaced with gunmetal gray, is missing its heavy cannons, and has a plasma cannon where the nose should be.
Around the same time as Walt is being reunited with his plane, Yui and Graf had borrowed some Kintharian AR helmets and took off to virtually blow each other up.
As always, both parties have begun at radar range.