Hear me out!

1. Alleged S4 location near area 51.

2. Alleged S4 photo from the recent Bob Lazar documentary.

3. Bob Lazar illustration of the site.

4. Same hill from ground level.

5. Another angle which similar background.

I know we can't see much in the photo presented in the documentary but this could very well be S4

(Google Earth Pin)

37°09'34.47"N 115°51'23.22"W

Also linking the post which found the S4 location in the comments.