And then, like an angel out of heaven Coulson appeared from the sky, heavenly light shining around him. It wasn't a metaphor; he hung from a rappelling rope, uv light clutched in his free hand and lighting up the whole stairwell with a light that burned as close to sun light as you could get, and the creatures gave piteous howls and shrieks, clambering to get away.
Coulson dropped the final few feet, holding the light between his teeth and helping Sitwell up.
"Come on-" he muttered, words slurred, slinging Jasper's arm over his shoulder and half dragging him back the way they'd come, trying to keep the light up as a shield.