UFO entering mountain? DOW-UAP-PR061, "Spherical UAP [CALLSIGN] 2021/04/12 vid 0"

​ I was looking at some videos on war.gov and this one caught my attention. I have not found other posts talking about this but here we go. At 3:59, from what i can see, it look like the object is getting closer to the ground and the disapears in the shadow/mountain. Where I am g...