4Kᵁᴴᴰ Boeing C-17A Globemaster III NATO SAC Heavy Airlift Wing Arrival & Departure @ RAF Fairford - YouTube
Saks Wing Shak | Chattanooga TN
Draconology - Dragon, wyvern wing anatomy by VikasRao on DeviantArt
American Museum of Natural History on Twitter: "What's the purpose of the sacs of the lesser sac-winged bat? The sacs on its wings are scent glands, which are used to mark territory