In Marvel movies, danger is always right around the corner, and for the cast and crew of The Eternals, an upcoming film from Marvel Studios, the danger was non-fiction and in the form of a Nazi bomb.
They were filming on location in the Canary Islands when the bomb was discovered. The area was supposedly used as a Nazi army camp during WW2.
Luckily everyone was evacuated without incident, and professionals defused the bomb.
For more info, read IGN's article.