diff --git a/baystation12.dme b/baystation12.dme
index 8079b7deefaed..094f7a0b478b6 100644
--- a/baystation12.dme
+++ b/baystation12.dme
@@ -3371,6 +3371,7 @@
 #include "mods\_master_files\code\modules\overmap\panicbutton.dm"
 #include "mods\_master_files\code\modules\power\gravitygenerator.dm"
 #include "mods\_master_files\code\modules\projectiles\projectile\bullets.dm"
+#include "mods\_master_files\code\modules\psionics\events\mini_spasm.dm"
 #include "mods\_master_files\code\modules\species\species.dm"
 #include "mods\_master_files\code\modules\species\station\adherent.dm"
 #include "mods\_master_files\code\modules\species\station\human_subspecies.dm"
diff --git a/maps/sierra/job/jobs.dm b/maps/sierra/job/jobs.dm
index ceaf2f7b9d59b..f8d79994f7cc2 100644
--- a/maps/sierra/job/jobs.dm
+++ b/maps/sierra/job/jobs.dm
@@ -150,6 +150,8 @@
 		/datum/mil_rank/civ/civ
 	)
 	required_language = LANGUAGE_HUMAN_EURO
+	psi_latency_chance = 8
+	give_psionic_implant_on_join = FALSE
 
 /datum/map/sierra
 	default_assistant_title = "Crewman"
diff --git a/maps/sierra/sierra_events.dm b/maps/sierra/sierra_events.dm
index b92cb1362e034..1248d19b7c06a 100644
--- a/maps/sierra/sierra_events.dm
+++ b/maps/sierra/sierra_events.dm
@@ -1,6 +1,20 @@
+#define ASSIGNMENT_MEDICAL "Medical"
+
 /datum/event/prison_break/setup()
 	areaType = list(
 		/area/security/sierra/hallway/port,
 		/area/security/sierra/brig,
 		/area/security/sierra/prison
 	)
+
+/datum/event_container/major/sierra
+	available_events = list(
+		new /datum/event_meta(EVENT_LEVEL_MAJOR, "Psionic Signal", /datum/event/minispasm, 0, list(ASSIGNMENT_MEDICAL = 10), 1),
+	)
+
+/datum/map/sierra/setup_events()
+	map_event_container = list(
+		num2text(EVENT_LEVEL_MAJOR)	= new/datum/event_container/major/sierra,
+	)
+
+#undef ASSIGNMENT_MEDICAL
\ No newline at end of file
diff --git a/mods/_master_files/code/modules/psionics/events/mini_spasm.dm b/mods/_master_files/code/modules/psionics/events/mini_spasm.dm
new file mode 100644
index 0000000000000..5660aa2fb37f2
--- /dev/null
+++ b/mods/_master_files/code/modules/psionics/events/mini_spasm.dm
@@ -0,0 +1,54 @@
+/datum/event/minispasm
+	var/alarm_sound = 'packs/infinity/sound/misc/foundation_alarm.ogg'
+
+/datum/event/minispasm/announce()
+	priority_announcement.Announce( \
+		"PRIORITY ALERT: SIGMA-[rand(50,80)] PSIONIC SIGNAL LOCAL TRAMISSION DETECTED (97% MATCH, NONVARIANT) \
+		(SIGNAL SOURCE TRIANGULATED ADJACENT LOCAL SITE): All personnel are advised to avoid \
+		exposure to active audio transmission equipment including radio headsets and intercoms \
+		for the duration of the signal broadcast.", \
+		"Cuchulain Sensor Array Automated Message" \
+	)
+	sound_to(world, sound(alarm_sound))
+
+/datum/event/minispasm/end()
+	priority_announcement.Announce( \
+		"PRIORITY ALERT: SIGNAL BROADCAST HAS CEASED. Personnel are cleared to resume use of non-hardened radio transmission equipment. Have a nice day.", \
+		"Cuchulain Sensor Array Automated Message", \
+		new_sound = 'packs/infinity/sound/misc/foundation_restore.ogg' )
+
+/datum/event/minispasm/do_spasm(mob/living/victim, obj/item/device/radio/source)
+	set waitfor = 0
+
+	if(iscarbon(victim) && !victim.isSynthetic())
+		var/list/disabilities = list(NEARSIGHTED, EPILEPSY, NERVOUS)
+		for(var/disability in disabilities)
+			if(victim.disabilities & disability)
+				disabilities -= disability
+		if(length(disabilities))
+			victim.disabilities |= pick(disabilities)
+
+	if(victim.psi)
+		to_chat(victim, SPAN_DANGER("A hauntingly familiar sound hisses from [icon2html(source, victim)] \the [source], and your vision flickers!"))
+		victim.psi.backblast(rand(5,15))
+		victim.Paralyse(5)
+		victim.make_jittery(100)
+	else
+		to_chat(victim, SPAN_DANGER("An indescribable, brain-tearing sound hisses from [icon2html(source, victim)] \the [source], and you collapse in a seizure!"))
+		victim.seizure()
+		victim.adjustBrainLoss(rand(5,15))
+	sleep(45)
+
+	if(victim.psi)
+		victim.psi.check_latency_trigger(100, "a psionic scream", redactive = TRUE)
+
+	if(!victim.psi && prob(5))
+		var/new_latencies = rand(1,4)
+		var/list/faculties = list(PSI_COERCION, PSI_REDACTION, PSI_ENERGISTICS, PSI_PSYCHOKINESIS)
+		for(var/i = 1 to new_latencies)
+			to_chat(victim, SPAN_DANGER(FONT_LARGE(pick(psi_operancy_messages))))
+			victim.adjustBrainLoss(rand(5,10))
+			victim.set_psi_rank(pick_n_take(faculties), 1)
+			sleep(30)
+		if(victim.psi)
+			victim.psi.update()
\ No newline at end of file
diff --git a/packs/infinity/sound/misc/foundation_alarm.ogg b/packs/infinity/sound/misc/foundation_alarm.ogg
new file mode 100644
index 0000000000000..117d865bf97e9
Binary files /dev/null and b/packs/infinity/sound/misc/foundation_alarm.ogg differ
diff --git a/packs/infinity/sound/misc/foundation_restore.ogg b/packs/infinity/sound/misc/foundation_restore.ogg
new file mode 100644
index 0000000000000..efb8b5d86ed48
Binary files /dev/null and b/packs/infinity/sound/misc/foundation_restore.ogg differ