The men in black coats came to our town, and everything changed.
I'd say the "and everything changed" part is what tips it over the edge of blandness, as Wildbow put it. Men in black coats? Okay, sure. That's a sorta cliche, but it's only the first line. Men in black coats at least provide imagery for the reader. "Everything changed" is just a generic stock phrase (most likely meant to add a sense of impact to the text, but just ends up feeling dull and oversimplified).
Though, at the same time, I wouldn't place too much value in the importance of an opening line. It's good to think about, sure--but you should be thinking about ALL of your lines. How much work they do. How much they inform, establish, progress, etc. If a line isn't doing much work, then there's a good chance it won't be very interesting to read. Most readers will cut you some slack on this, especially in the first few paragraphs, but if you let it keep happening, they're gonna get bored real quick-like.
Personally, I think folks make a bit too much fuss about the opening line. It's a fun exercise, examining the first lines of successful works and trying to glean insight from them, but let's take a step back and remember that people are NOT going to be put off by your first line alone. Even if your first line is absolutely horrendous, people will at least look at the second line for an explanation why. Heck, you could employ that as a strategy, even. Make the first line incredibly dull and basic, then follow it up with a line that completely subverts everything that the opener established.
Don't get me wrong. I know our attention spans are short 'n all in these noisy modern times, but that's why ALL of your lines are important, not just the ones at the beginning or end of a chapter. And really, with the opening line, you already have your reader's attention. They've already made the decision to start reading. You don't need to worry about their eyes glazing over until at least a few sentences later.