Spherical UFo

Date: 4/2/2019

I was walking with my son on the roof at my old unt house. I saw a flying white spherical shape in th sky I knew it is a UFO I picked my phone and started taking videos of it it was very close and he moved fast and then the UFO started to change his shape into helicopter and flight back towards me and landed at the roof where I was standing. I was afraid because there is 4 humans get out from it and started talking to me.