This is how you gain access to the Nellis Air Force Base in New Vegas.
Once you start entering the area, you’ll get bombarded by the Boomers.
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Refill with stimpacks, food, water, doctors bags when necessary.
And remeber to make the bet with George before you enter the area. If you have 60 speech or more you can lie to raise the wager to 700 after you’ve entered Nellis AFB and came back.
When you reach the gate you’ll be let in.