" The agent carrying the team’s nonlethal rifle raised it and fired. The projectile that launched down the aisle and wrapped itself around Bellamy’s legs was nicknamed Silly String, but there was nothing silly about it. A military technology invented at Sandia National Laboratories, this nonlethal “incapacitant” was a thread of gooey polyurethane that turned rock hard on contact, creating a rigid web of plastic across the back of the fugitive’s knees. The effect on a running target was that of jamming a stick into the spokes of a moving bike. The man’s legs seized midstride, and he pitched forward, crashing to the floor. Bellamy slid another ten feet down a darkened aisle before coming to a stop, the lights above him flickering unceremoniously to life. "

― Dan Brown , The Lost Symbol (Robert Langdon, #3)