Washington PostSuper Bowl 50: Heavily fortified stadium made for safe, sane eventSan Jose Mercury NewsSANTA CLARA -- With scores of military-grade ground transports, helicopters and aircraft on the ready, and thousands of law-enforcement and private security personnel on hand, Super Bowl 50 at Levi's Stadium was one of the most heavily fortified ...Sights & sounds: Security takes precedence at Levi's StadiumSacramento BeeThe Latest: Broncos jump ahead 10-0 after defense scores (Feb 7, 2016)FOXSports.comLevi's Stadium Turf Causes Issues for Players at Super Bowl 50Bleacher ReportUSA TODAY -Washington Post -San Francisco Chronicleall 864 news articles »