DAS CONK CREET BAYBEE! Someone please revoke my joke licence.

   So, the good Chomps Lewis of Sloan makes the bold statement that the NCR ships the limestone mined at Quarry Junction, via rail, to Boulder City, where he assumes it is used for the construction of fortifications. Ike at Boulder City confirms this, saying that the NCR is building bunkers along the length of the Colorado River.
But alas.
Where are they?

I chose to address this glaring oversight with the simple addition of NCR manned pillboxes. Considering the Deathclaw issues at Quarry Junction, they haven't gotten as far as they'd hoped: only four pillboxes can be found, from the peaceful shores south of the Boulder Beach Campground down as far as Nelson, each one manned and garrisoned in... typical NCR fashion.

But just doing that would be so boring.
(And I have very little self-control when it comes to feature-creep.)

So how could I possibly resist the chance to give these bunkers a bit of extra punch?
Allow me to introduce to the Mojave an almost 450 year old veteran of American warfare. Something loud, proud and able to put a hole the size of a dinner plate in anything that happens to cross its path. The M2 Browning.

So, what do I offer?
Bunkers, each armed with an automated M2 Browning, programmed to the NCR's tastes. Foes of democracy, be wary...
Furthermore, an inventive NCR trooper developed a hand-made version of the weapon. While the original can be found east of Camp Forlorn Hope, the top brass was impressed with this sort of thinking, and began issuing similar weapons to its Heavy Troopers. 
A capable Legionary, one of the men responsible for the victory at Nelson, captured one of these machine guns and made some dramatic modifications.
Finally, in a... somewhat less sensible aspect... an insane man, long since disappeared inside REPCONN Test Site, is said to have made another variant, loading and firing energy cells and personalised with his own, rather unorthodox, paint scheme. This one is Wild Wasteland only!

Also, you can download Revswagger's TTW and Big Guns Patch if you want an extra layer of functionality. Cheers, Rev!

Issues:
   None that I know of? I hope? Maybe?
   Actually, yes. Neither Michael (the NCR fella) or Revicus (the Legion fella) have voiced dialogue. Truly terrible, I know.

Credits:
   Fitzynator42 ------------------ The creator of armaments and static defences alike.
   Revswagger ------------------ The suggestor of the armaments and the creator of the TTW Patch.
   Action --------------------------- The suggestor of far less sensible armaments.
   Miros ---------------------------- The suggestor of many updates to come.
   Bethesda and Obsidian --- For providing us the tools.