The skies were quiet above the bridge, save for the occasional flapping of wings. Say what you want about thestrals, they were not the best at flying quietly. Gliding yes, but flapping made more noise than a feathered wing. At the very least Rainbow could assume they were doing their job, as not a sound could be heard from the griffons. Not a screech, or cry, or anything. With luck they might actually pull this plan off.