NEW : Survivor did n't hear screams , just `` shooting , silence , shooting , silence '' NEW : The sound of a gun is not the same as that of an explosion. `` It 's free English class Law enforcement finds 14 dead in immigration center , 37 survivors . Shootings occurred at American Civic Association , which helps immigrants , refugees .
NEW : Survivor did n't hear screams , just `` shooting , silence , shooting , silence '' NEW : The sound of a gun is not the same as that of an explosion. Law enforcement finds 14 dead in immigration center , 37 survivors . Shootings occurred at American Civic Association , which helps immigrants , refugees .