https://www.youtube.com/watch?v=Irpupd5IXQY The fourth CH-53K helicopter successfully completed its first flight on August 31. The CH-53K will ultimately work with the

https://www.youtube.com/watch?v=C2sOTBN4s-Y

https://www.youtube.com/watch?v=zcN3XQqaZug

https://www.youtube.com/watch?v=WKDyvjek0BY

https://www.youtube.com/watch?v=Q98yrPKxmig