For now, however, things should be fairly calm. The Hoover Dam offices has more of the same threats you’ve seen already NCR Troopers will occasionally engage Legion infiltrators. Turn south, south-east and enter a Hoover Dam Tower, then take an elevator down to the Hoover Dam Offices. If you enlisted the aid of the Boomers, they’ll also make an appearance and bomb the combatants on the far side of the dam. As you approach the center of the dam you’ll find a checkpoint built along the path, which is inaccessible.
Make your way north-east across the top of the dam killing whatever Legion (and possibly NCR) foes you come across and letting the Securitrons and NCR take abuse, when possible.
If you didn’t break the alliance, they’ll be on the side of Caesar’s Legion, meaning you’ll have to put them down. A large turret will explode as you go, and if you convinced the Khans to perform a suicide attack, they’ll show up here and… well, live up to the “suicide” part of things. Your goal on this first stage of the quest is to travel north-east across the top of the dam, past the Visitor’s Center.
