(Portland, OR)  --  Hundreds of people in Tualatin are calling for changes in the nation's gun laws.  The group gathered yesterday on the Tualatin High School football field for a vigil honoring the victims of last week's deadly school shooting in Florida.  Tigard High School senior and student body vice president Sierra Kruse spoke at the event about growing up in a nation reckoning with school shootings.  Kruse says she was born in 1999, which was the year of the Columbine shooting, and that she's never known a world without school shootings.