Brent Kiger, Olathe Public Schools' director of safety service, displays a panic-alert button while students at Olathe South High School rush between classes, Aug. 19, 2022, in Olathe, Kansas. The district introduced the buttons, which allow staff to trigger a lockdown that will be announced with flashing strobe lights, a takeover of staff computers and a prerecorded intercom announcement, at the start of this school year as part of $2.1 million plan to make district schools more secure. In the wake of a deadly elementary school shooting in Tennessee in March, state lawmakers across the country are moving forward with school safety measures. Charlie Riedel/ AP Photo