This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
texture Air Sea Rescue Drill from lighterthanair aircraft. Shown Life Raft Sail Signal. Sign reads Needs Medical Attention. Photographed by J.L. Hasse September . U.S. Navy photograph now in the collections of the National Archives. Air Sea Rescue Drill from lighterthanair aircraft. Shown Life Raft Sail Signal. Sign reads