Trying this again as i tried to draw it in paint, mouse drawing isn't my thing, but you'll get the idea

a few weeks ago, im sitting in my carport patio with another friend, and all of a sudden i hear a distinct fan noise above us, im near the edge of the carport and look up, and there is a drone about the size of a volkswagon car in lenght (maybe 10 feet long) and about 3 feet wide, and has 2 fans for hovering at each end, but it was moving at about 5 MPH, faster then a walk and slower then a jog, and here is the thing, my place is one story home, it was only about 2 to 3 stories in height, like 30 feet off the ground, i went whoa!, check it out, and then out the back of the carport it continued on its way, this was so low, nighttime, so quiet, you had to be below it to really hear it, in about 5 to 10 seconds it was already out of view in the darkness, (and only about a foot in thickness for the drone) this was not a normal drone, as to the size and how it flew, and how low in the sky, well, it would of hit a lot of tall homes where i live if it stayed at that height, it wasn't like 100 feet off the ground, it was close, and nighttime,

anyway, what do you think they were doing with it at night? what reason would you think it was being used for?

imo, simple night survey would not of been needed that close to the ground, and i am not that important for anybody to give a flying fuk about me, nor is my location, there is not secret facilities near me, its like, a wasted reconnaissance mission at my location, so, what were they doing here?