Seamus & Open (Gryffindor Student/Prefect/DA member)
Despite all of the training they had gone through and everything they learned over the years through Harry, Seamus never thought he'd have to use any of it. Not ever, but at least not while he was still in school. They were supposed to be safe inside the walls of the castle, but the urgency of the DA meeting the night before proved otherwise.
Originally he was going to walk the halls with the prefects, till he noticed that Harry and Ron weren't in the dorm rooms. None of the 6th or 7th year girls had seen Hermione, either. This concerned him slightly. Actually, it concerned him alot. None of the other prefects in the house were in the DA, so they had no idea what was going on. He didn't know where Dean and Neville went off to, as he hadn't seen them since dinner.
So all of a sudden, Seamus realized that he could be the house's first - and last - line of defense if something did happen. With his wand in his robe and the latest issue of Quidditch Weekly tucked under his arm, he made his way to the common room, sat in one of the chairs, and tried to look as non-worried as possible.