In Fallout: New Vegas, you will eventually end up having to check out the other factions and tribes in the game. One of them happens to be the Boomers over at Fort Nellis Air Force Base, a clan of old vault dwellers who took over the base and have been making use of their heavy artillery to keep intruders away.
If you're having trouble making it through the hail of fire and mortar shells on the way to Nellis, check out this video. In it you will get a quick walkthrough of how to get to the fence of their base!
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