Oklahoma Gov. Mary Fallin on Tuesday signed into law four bills seeking to improve school security. The proposals were prompted by the recommendations of a 22-member commission formed in response to the shootings at Sandy Hook Elementary School in Newtown, Conn., in December. The new laws require more safety drills and yearly updated crisis plans, and more coordination between schools and law enforcement. In addition, they create the Oklahoma School Security Institute, which will be tasked with monitoring schools' compliance with security laws.