It's common in news headlines when an event is very recent or a story is still developing. A report about, say, the US bombing a previously unreported site in I

It's common in news headlines when an event is very recent or a story is still developing. A report about, say, the US bombing a previously unreported site in Iran several weeks ago would be in the past tense "US bombed <site> in Iran". When the US bombs Iran today, it'll be titled "US bombs <site> in Iran".