Chinook exercises?

I haven’t seen a lot of news about this but it seems the military activity in the south metro area has been increasing. Last night 5 chinooks ran east to west between Tualatin and Beaverton for over an hour. Some reports of spotlights. Also a C130 running up and down I5 at the same time. Btw the chinooks were so low at one point it shook our neighborhood. Curious if we have any military that have insight