True but Coca-Cola (1886) and Pepsi (1940) have been around for a very long time. Which means that they would have been around in the Fallout Universe as well. So maybe there was a Cola-War and Nuka-Cola won out.

Yet that still doesn't explain why Sunset...

You know what who really cares? Especially when there are more pressing questions at hand.

It does explain it. Coca-Cola and Pepsi kept sunset from going national. Nuka-Cola comes along and crushes Coca-Cola and Pepsi and becomes #1. Nuka-Cola continues to keep Sunset from ever going national.

I agree its not a big issue.

Here's a real world example -- in Kentucky there's a soft drink called Ale-8-One that's everywhere. I drive around a lot, and I've never seen it anywhere else. Kind of like Frank's in Philly. I'm sure there are other examples.
Maybe Sunset is like that -- purely regional. If I recall correctly from the monitors in the Sunset factory, their expansion attempts were token efforts at best.

I'm guessing that's not the canon ending then which is odd considering no matter what Myron dies at the end. Though perhaps the Chosen One "fixed" him and a better ending came out? Or maybe the Chosen One never recruited him and left him at the Stables.

How the Vertybirds reached to DC?

One of the many mysteries of the Enclave in Fallout 3, as far as I am concerned no explaination I've heard can explain it including they were there from before the war.

Well, there's a theory going around (and its just a theory mind you, there was a heated debate on it awhile back) that the vertibirds range is actually a lot longer than we originally thought. A modern helicopter can reach ranges of 500 miles + without refueling (heck a single engine copter set the record for a heli's longest flight at 2000 miles in the 1960s) so its reasonable to think that military craft built after 2077 could reach similar ranges, which allows for at least the possiblity that the verti fleet was able to get to Chicago (and prehaps that is why there is an outpost there, refueling station?). If it is also now canon that the vertibirds use nuclear power, then they certainly should have been able to go the distance.

I know in Fallout 2 it states that Navarro is a refueling station for the vertibirds, but is there an actual quote that says "Vertibirds only have a range of 175 miles". Maybe the vertibirds flying to and from Navarro were not full up on gas in order to conserve fuel and prevent unnecessary loss if the craft went down? Just a theory but I thought I'd bring it up.

Raven Rock had those launch pad elevator things -- maybe it had Vertibirds in storage? (A whole hell of a lot of Vertibirds, mind you)

In one of the versions of the fallout bible it says that vertibirds are short range and say they are ran on liquid fuels. I can see the reason for that since the enclave would then be in full control since they had the only oil rig left, but the illogical part is they had no fuel in the dc wasteland nor any chance or resupply and you would think that why would you bother spending so much time bothering with building so many types of power armour, when you should be reffiting the whole fleet of vertibirds with fusion engines, if they controlled the skies the BOS could have ran around in their power armour but it wouldnt have made much difference if the enclave controlled the skies. Plus the whole ending after you start the purifier, youve destroyed raven rock, and only now do air mobile units appear and enclave camps show up, plus the fact you kill the troops around 2 of the vertibirds now you own 2 vertibirds, not that you could do much with them since once you ran out of fuel they would have just been big paperweights.

The Enclave Camps appear immediately after the completion of The Waters of Life, after James dies; the Enclave camps around the two stationary Vertibirds near Megaton and on the steps to the Capitol Building respawn every 72 hours.

The main question that should be asked is why the Vertibird fleet at any time should have ran on oil when oil is a finite resource and only available from one source and the Oil Rig is powered by a nuclear reactor, just recharge the birds from that. I contest the Bible on Vertibirds running on liquid fuel.

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My arguement that their is no reason why Vertibirds should have been present at Raven Rock is that Raven Rock is not an Enclave location, it is a Continuity of Government location for the Pentagon as confirmed by Eden, the Enclave had their own COG base, the Oil Rig, and I think it is safe to assume that before the war, their was nothing of any extreme value at Raven Rock which would make it appealing to them. The Vertibirds were not supposed to enter service until 2085, only the Enclave seemed to have stockpiled whatever one's were completed before the war as we have seen none anywhere else including Nellis Airforce. My point is of all the things that the proper government would think to store in preparation for the war, why would it be a prototype gunship which surely can't have been mass produced? The things are military in everyway, hardly any storage capacity and packed wth all kinds of ordinence.

Good point. I guess thos launchpads could have been for regular helicopters (are there regular helicopters in Fallout?)

I can't remember when Eden was supposed to activate -- is it possible that in the inaccessible portions of Raven Rock there were robotic facilities that could manufacture new Vertibirds? Maybe when Eden came online he started building weapons, armor and Vertibirds?

There must be regular helicopters, the Vertbird is actually, well technically, some kind of tilt-wing aircraft like those Osprey things, something that advanced must have been preceeded surely? Eden was a pre-war ZAX computer which developed it's own sentience, pressumably sometime post-war, we can argue that it's improbable or impossible but at the end of the day there a tonne of Vertibirds in F3 and regardless of reason an explaination must exist, being fans it's our duty to speculate about blanks, so yeah, there must be facilities beneath Raven Rock capable of producing them; we do after all see that there are area's in Raven Rock not covered on the map, Level 1 a door leading to a long corridor closes due to an explosion.

If indeed the vertibirds ran on nuclear power, or if they were switched to it at a later time (Fallout 3 seems to suggest they did), then its reasonable to assume that they have a much longer range than a mere 175 miles. They should have at least been able to reach chicago without stopping.