Flyover this morning?

[genevra-mcneil.livejournal.com]

So, while we were walking this morning, a pair of jets flew low and loud over our heads. My husband suspects they are F-15s. I assume it was a celebratory flyover... but for what? Or did some of those Yemen packages wind up at Logan, causing some ruckus? Just curious if anyone had any information. My (cursory) search of Google News turned up nothing, but it was really cursory.