I was walking the beach yesterday to shoot the sunset and happened to catch a handful of Navy rescue training exercises. Pretty cool!
As a sidenote: I really love using this lens on my 5dIII compared to my 7dII. I think I must need to do some MFA adjustment with my 7dII, because I never seem to get such sharp and crisp results like I do on the 5d or like I used to get with my 70-300L on the 7d. How are you folks setting up to MFA a longer lens like this?