2:20 P.M. Update: ARL Now points us to another march that could add to commuting issues on Thursday: Occupy Northern Virginia, a group that hopes to march from Ballston to the Key Bridge, according to the schedule on the group’s site. This march, which would begin at 3:30 p.m. and meet up with the other march at 5 p.m., could cause traffic issues on Wilson and Clarendon boulevards before heading north on Fort Myer Drive in Rosslyn.