i live in sothern califonia . ive heard plenty of sonic booms in the past few months ive had U2s fly by my house ive seen that secret new dounts on a string jet trail. wat is this stuff
yes i am close to edwards afb and lancaster if that helps u

The contrails could be either an x-plane or you may have mistaken them for the trails from an unclassified fighter. (f-117,f-15,f-35,etc.)

Or......it could be from a classified aircraft. Who knows.

I've read about the increase of sonic booms on other fora as well.
I could be due to F-22 and F-35 JSF test flights.

F-22 barrier testing started earlier this year...