After two days of living history events to commemorate the 150th anniversary of the Battle of Bull Run, more than 8,700 reenactors will bring First Manasssas to life today, starting at 9:30 a.m. Over 17,000 spectators are expected to attend, but if you can’t bear the heat, follow along here (and @manassaswp) as The Post’s Timothy R. Smith tweets from the scene. Plus, follow other Washington Post Civil War Twitter feeds here.