They will fly over if you ask, if your intention is in the right place and if you are comming at it from the heart like a child wanting to see them an say hello not like a scentific person demanding proof. The helicopter that came after it is the government checking things out.
Here is some ufos we've filmed, maybe this is similar to the ones your seeing.
https://www.youtube.com/watch?v=fLl6P_7Cdx0
Here is a all black goverment helicopter flying over my friends house.
https://m.youtube.com/watch?v=riZ04NtOrxQ