Four of the world’s oldest Thunderbolt sirens still in service are right here in Sedgwick County and will go on permanent display, starting Saturday, March 4, 2023. A ribbon-cutting event at 10 a.m. will showcase one of the historic outdoor warning devices that is 70 years old, at Sedgwick County Fire Station (SCFD) 32, 7750 N. Wyandotte Way, Park City. The other three Thunderbolt sirens will be on display at SCFD Station 38, Wichita Fire Station 20 and on a traveling exhibit used by Sedgwick County Emergency Management (SCEM).