Inside the Denver movie theater, the shooter unleashed two canisters of gas before unveiling his hail of bullets into the crowd of innocent victims ready for the midnight premiere of "Dark Knight Rises."  That night, 12 people died.  Brent Lowak of Bulverde, Texas, went to the movie with his friend Jessica Ghawi, an aspiring sports journalist who recently moved from Texas to Colorado. Lowak, 27, and Ghawi, 24, were sitting in the sixth or seventh row when Lowak heard the hiss of gas from the canisters.  Lowak - was studying to become an EMT - applied pressure to Ghawi's wound as she screamed. Then she stopped and Lowak realized she had been shot again, and she was soon dead.