The title sequence of the film "Check PointCheck Point" has a part that says "Inspired By True Events".
The story is about a sleeper cell of insurgents who plan to hijack the USS North Carolina from its permanent mooring in Wilmington and use it to sail to Washington and presumably destroy the capital. There is a large fire fight between the insurgents and some retired vets, and ultimately the army gets called in and lands ground troops.
I didn't count the casualties, but I'm guessing it was about 30. I can't find anything like this when I search.
What were the true events about a domestic insurgency and an attempt to hijack the USS North Carolina?