In southern and eastern CO; Calhan, Limon, Burlington, Sterling, and La Junta, CO all have older siren systems in place. * Calhan has a FS&S 550AT. * Limon has three FS&S SD10s, and one Sentry 3V8-H. * La Junta has a variety of older (1980s/90s) Sentry Sirens. * Burlington is also peppered w...