Ouzo, by definition will always be potent, but it’s strength can vary. In the late 70’s I was in the Navy, and I went to Athens. I have no way to prove it, but the Ouzo I was served in Athens seemed a much stronger version of Ouzo compared to what is sold here.
It’s like comparing Everclear to Sunny Delight.
One of these days, I hope to get to Athens and try the local brands of ouzo. Until then, I'll make due with imports of the better stuff like Babryannis or Ouzo Mini; Metaxa and Sans Rival are swill, the Greek equivalent of Miller and Budweiser, but in a pinch they'll do.
And thank you for your service.