Brian Clark (born July 4, 1947) is a Canadian businessman and survivor of the attacks on the World Trade Center on September 11, 2001. Clark worked for the American international brokerage firm Euro Brokers Inc. (later merged into BGC Partners), which lost 61 employees that day, nearly one-fifth of its New York branch. Clark was one of only 18 people in the South Tower to escape from within or above the impact zone where the plane struck, escaping from his office on floor 84. No one escaped at or above the impact point in the North Tower. Clark's testimony before the 9/11 Commission, where he detailed problems with the 911 emergency call system, has been widely quoted. September 11, 2001 Rescue of Stanley Praimnath After Flight 175 struck the South Tower, Clark and eight other employees of his floor who had survived the impact gathered together and started to descend Stairwell A. They only made it to the 81st floor when Clark and his group were met by a woman and a man coming up the stairs. The woman blocked their paths and warned them there were flames and smoke further down, and their only option was to try and go up to the roof in hope of being rescued from there. Clark and his coworkers stopped and debated on the stairwell landing about what to do next; whether to listen to the woman and go up the stairs or to ignore her warnings and go down the stairs. As the group stood there debating their next move, a faint scream for help coming from inside the 81st floor caught Clark's attention. While his group continued to debate what to do, Clark grabbed coworker Ron DiFrancesco and entered the 81st floor to look for the person screaming for help. As Clark and DiFrancesco entered the floor, Clark turned around to observe his coworkers as they started to go up the stairs to the roof instead of down. That group would all lose their lives that day, as access doors to the roof were locked, and there were no plans for helicopter rescues from the roof, as the NYPD deemed it too unsafe to attempt due to dense clouds of smoke and rooftop antennas. As Clark and DiFrancesco made their way to the voice screaming for help, DiFrancesco became overcome with smoke and returned to the stairs, which he would also