Vietnamese Strike Troops man a Hurricane Aircat airboat in a river operation
US Army
<a rel="nofollow" class="external free" href="https://history.army.mil/html/books/090/90-23-1/CMH_Pub_90-23-1.pdf">https://history.army.mil/html/books/090/90-23-1/CMH_Pub_90-23-1.pdf</a>, page 107