$.02 for you working in a highrise...fire/smoke threat
dedicated rescue hood and filter canister for hydrogen cyanide and particulate matter.... fireproof blanket to throw over you
gas mask (military surplus masks are typically many years out of date, but an option with a new filter)
GI pilots Nomex gloves, GI Nomex balaclava or from race car fire suit with tight fitting Lexan goggles and industrial respirator
battery alarm as you might not be able to blow a whistle
high intensity light... high intensity light sticks
section of "follow me" cord,non melting
window breaking punch, Wonder bar, insulated wire cutters, hacksaw to remove interior metal wall studs
depending on height and training... throw bag with Kernmantle rope, figure 8, Swiss seat, carabiners, double thick gloves