Large blimp looking craft, almost see through, quiet but make the ground shake

I’ve held onto this for a year now and I think about it every day. I needed to share in hopes to get it off my mind.
I was car camping at the Greendale campground in the Green Mountain National Forest, a place I know well. I was listening to a podcast when my car started to shake. I thought it was a bear. It was almost as if an earthquake was happening. I quickly realize it was not a bear and got out of the car. The trees were moving, my car was moving, I felt it. Birds who were sleeping in trees now screamed. I have birds, their sounds were of being scared out of sleep, but so many, it gave me chills. I looked up and saw a large blimp like ship that was low, just above the tree line, it was like see through, it reflected the sky, it looked solid but not, it’s hard to explain. It was like stealthy I guess you could say, like a Star Trek ship cloaked. It made no noise and it moved slow. There was a power coming from it. Once it was over head it blow air on top of me, it was warm, like the engine was pushing out air. This is really hard to explain in words. I’ve had a lot of weird things happen in my life, I’ve seen my share of unexplained things, but this bothered me. It’s not like anything I’ve seen or heard of. All I can think of is it’s some kind of government ship being tested and I think that’s what bothers me most.
I hope I explained myself well enough.
I’ve clicked there was aura or haze around it because it did kind of have a hazy or cloudy look around what I feel was the outline of the ship.