1977: intimidating
2004: I think given that this sound isn't recycled it's actually more interesting than the 77 equivalent.
Adywan: It's been awhile, but I think he made some sort of hybrid noise; however, it's also possible he just put the 77 one back in. Unless I'm just making this up, my preferred version.
2011: I think I could make better in Audacity following a tutorial.