There are times when a “selfie” with a location tag is a good way to brag about your whereabouts, like when you finally reached Mt. Fiji or when you’re in a 5-star Michelin restaurant. But, when you’re a tourist going around Crimea, a titular conflict zone in the Ukraine-Russia war, it might not be too good of an idea to post a selfie…especially one with you on briefs.

Just hours ago, Ukrainian Defense posted a photo of a Russian tourist showing the position of the Russian air defense base in Yevpatoria, Crimea. The tourist was seen posing twice with S-400s behind him.

According to local authorities, they were able to confirm the exact location of the post (based on the images) to: 45.180317, 33.232232.

And, just as hostile as the internet is, it can also be a helpful place for crowdsourcing information.

After the image circulated online, another Twitter user posted an image of the possible location of the S-400s.