A trader for DRW Commodities on the 34th floor of 7 World Trade Center was having a late night partying at the company's offices when he was struck with a pyromaniac urge today. 24-year-old Ryan Brinkerhoff was arrested and charged with six misdemeanor counts and 12 felony counts, including arson, reckless endangerment and burglary after spraying flammable liquid on a door and some phones around the office around 3 a.m. When security cameras led Port Authority police to him, they found him inebriated and on cocaine and stopped him before he set the fluids off. A source told the Post, "He was having a party up there. He's going to wake up and be in deep shit." After being booked at the First Precinct, he laughed at photographers and asked, "Why are you guys taking my picture?"