After the Sandy Hook shooting in 2012, 7th-grade teacher Celisa Edwards from Dacula, Georgia created a simple device to prevent intruders from entering her classroom. Edwards invented the Portable Affordable Lockdown System, or PALS for short, simply a steel rope encased in plastic. The device runs just under $70 and Edwards says, “There is no price you can put on keeping children safe and an intruder out of a classroom.”
[WGCL-TV] [H/T:TheBlaze]