The Brilliant Vigilance of Seattle's Huge New SR-99 Tunnel
by Tim Newcomb from on (#3S6QR)
How do you keep a tunnel safe? Hundreds of cameras, 17 jet fans, and a sprinkler system that can out-hose Splash Mountain.How do you keep a tunnel safe? Hundreds of cameras, 17 jet fans, and a sprinkler system that can out-hose Splash Mountain.