In case you were startled by that incredibly loud sound over downtown on Wednesday afternoon, fear not: it was a fighter jet flyover ordered by President Donald Trump for the Polish president’s visit.

According to CNN, Poland is looking to purchase new F-35s from the United States, and the foreign minister recently traveled to Florida to see the jets fly. Trump and Polish president Andrzej Duda are reportedly set to announce an increase in U.S. troops in Poland, according to the outlet.

Despite a last-minute announcement from the city, many Washingtonians were confused (and kind of frightened) about what was going on.

What just caused the loud plane sound over downtown DC?? @capitalweather @maustermuhle @MartinDiCaro @DCist

— JShiffrin (@JShiffrin) June 12, 2019

@PoPville @capitalweather @washingtonian @DCist fighter jet just passed over downtown dc super low and loud. Anyone know what’s going on?

— christine zirneklis (@cazzirneklis) June 12, 2019

In case you missed the flyover, Twitter has you covered.

Hello, it's F35 day and also Poland day at the White House. pic.twitter.com/GUoCmznr8E

— Josh Wingrove (@josh_wingrove) June 12, 2019

That F-35 flyover was pretty impressive pic.twitter.com/jMOBWGvJZs

— Andrew Heining (@andrewjh) June 12, 2019

https://twitter.com/DCHomosIntern/status/1138867677244592130

There it is…the F-35 fighter jet coming up over the West Wing, heading north over Washington DC. Very loud and low pic.twitter.com/pnJlHZdqCK

— Karen Travers (@karentravers) June 12, 2019