Article Photos: Colorado lawmakers advance gun control bills 4/11

Jane Dougherty, of Colorado, the sister of Mary Sherlach, the school psychologist killed in the Sandy Hook Elementary massacre, testifies in favor of proposed gun control legislation in the Colorado Legislature, at the State Capitol, in Denver, Monday March 4, 2013. State Senate committees began work Monday on a package of gun-control measures that already have cleared the House which include limits on ammunition magazine sizes and expanded background checks to include private sales and online purchases. (AP Photo/Brennan Linsley)