Seen on my Walks

One thing I love about living close to a naval base is that it makes for interesting walks. This is what I saw recently on a walk to Simons Town ...
I expected a nature walk:

But then I saw this:

And this!

My goodness! Were we being invaded? Eeeek! (The navy had recently purchased a new submarine, so I felt suitably protected, but still ... )

I was going to ask these three officers for clarification, but they were ensconced behind a serious-looking fence ... They looked quite relaxed though, so I supposed everything was still hunky dory?

And then I saw this:

Ohhhhh! Okay, now I understood!

But how was the President going to arrive? Surely not like this:

Perhaps like this?

Well, I never saw the President, but I did see some other nice people, so that is okay!