10 Things about Las Vegas

1. Military HQ
• There are other places where a company to battalion sized group of soldiers can be found, but rarely do they have much - if any - equipment intact. At least some of them seek to rejoin at Vegas. It is a tough journey, and their units are often separated and reintegrated with others, making for a heartbreaking end. 
2. No More Area 51
• Although rumors persist of prototype weapons, secret caches of aircraft, or factories ready to pump out new rifles - no wasteland scav nor the government is going to find them. For now the US has the biggest and most impressive arsenal, but much of it can only be maintained through diligent labor, warehousing until absolutely necessary, or rampant cannibalization. Equipment recovery will often come before personnel, since they can recruit and train new soldiers easily.
3. The Gun Club
• This is the rumored cabal in charge of reintegrating settlements into the old United States. Publicly, they are known to offer the olive branch, funding, support, and arms to those who pay tithes to Vegas. Towns that refuse to cooperate tend to see food shortages, coups, raider attacks, plagues, and otherwise disappear...
4. Civ Gov and Mil Gov
• The military holds a lot of power in the day to day operations of the city, and some degree of veto power over who can enter or leave the city. (Usually in the form of no un-escorted people can leave, and we can't spare soldiers for such duty). However, the generals only make up a portion of the ruling council, which also includes presidential cabinet members, hospital staff, the city's mayor, and heads of the utility maintenance gangs. 
5. Experiment Rumors
• Vegas maintains the best health care and immunization rates of anywhere in the former US. However, the constant medical monitoring and monthly injections have made some people nervous. Tales of type five experimental reanimates, mind control, intentional sterilization and aphrodisiacs to control the next generation - few things are too wild to be dismissed out of hand.
6. Outside Allies
• Washington DC is mostly a burnt symbol, and many military centers were hit by orbital bombardment. However, the Planetary Citizens generally chose to hit transportation arteries to tie up supplies and divert attention from war fighting to relief efforts. Many capitals and government facilities remain intact, and at least nominally assisting the effort. Elements of the Canadian and Mexican governments also help where they can.
7. The Lights are Still On
• Food supplies can be rough at times, water usage limits constantly imposed, and curfews a way of life. Yet schools, buses, trains, casinos, and shops still run to some extent. Vegas continues to be very metropolitan, while the outlying areas usually exist in a state akin to the early 1940s during the wartime rationing. 
8. Wasteland Patrol
• Far more than any other city state, Las Vegas projects beyond its borders, and makes honest attempts at restoring the nation. A primitive postal service, new cellular towers, and traveling circuit judges are available to those who are willing to accept an agreement with the government. They are often rebuffed as relics, outsiders, or power hungry. 
9. President Grey is on Borrowed Time
• Legally, Grey is past the end of his second term as president, and while martial law is in effect, he is not a dictator and would like honest elections held soon. 
10. Old Habits Die Hard
• Even as the old US lies in ruins, there are still some within the government that longer term plans of how to stop others from rebuilding, and extend their dominion beyond the old national borders.