AI: Rapidly strobe room lights.

It takes every cycle of your machine reflexes and every ounce of motivation from your organic core to cut the lighting power before HeadOfSecurity's expert trigger-finger manages to get the first burst off. Low-resolution cameras can't capture the mere inches they wind up off-target from Captain. A loop will keep this going.

lighting = 0
INVOKE_ASYNC(L, /obj/machinery/light/.proc/update, FALSE)
lighting = 1
INVOKE_ASYNC(L, /obj/machinery/light/.proc/update, FALSE)

You've saved Captain in this chunk of milliseconds. What about the next?

AI: Set HeadOfSecurity to arrest