REPCONN headquarters REPCONN headquarters is the headquarters building of REPCONN Aerospace , a company based in Nevada that specialized in rocket manufacture . Background . REPCONN headquarters is the home office of REPCONN Aerospace . It lies in the pre - War town of " Henderson . " Layout . The building contains many hacking and lockpicking tasks . The main purpose of lockpicking and science in this location is to obtain security clearance so that the many defensive do not become hostile . There are several safes as well , most of which can be opened with either Science or Lockpick . The hardest of which are two very hard hacking terminals and one very hard locked door . The first very hard locked door and very hard terminal can be bypassed by playing your way through the entire building carefully . Behind them lies the unique weapon , the Q - 35 matter modulator . Exterior . Outside the building , there are 3 friendly . First ( main ) floor . Upon entering the building , the Courier will find 3 - 5 Fiend corpses and a number of maintenance robots . The area has several locked doors and safes . The most notable is the Very Hard - Locked door that leads to the unique plasma rifle , the Q - 35 matter modulator . This weapon can also be obtained via the second level through another locked door , however this is only a hard lock and not a very hard lock . There is a tour guide REPCONN robot that will greet the player character upon entering the facility . He will tell the player character to return between the hours of 10AM and 5PM ( if it is not any time between then ) . If the Courier chooses to wait , they will get to take a free tour , thus avoiding all lockpicking ( unless the player wants to gain XP from doing so ) that is needed to get to the utility room located in the orrery where they will find Jenny Millet ' s . Along with the keycard , the player can enter their face into the facial recognition database computer in the room behind the locked door the Fiend corpses are in front of , to bypass the security robots . The door can be unlocked by lock - picking or cracking the security terminal ( both Average difficulty ) . Note : " There are 12 hidden doors throughout the building ( starting at the tour bot ) , they require 8 Perception in order to detect them and 65 Repair to jam them closed . The display during the tour warns of the hidden danger ( though doesn ' t give an exact number ) , similar to how the " Ready , Set , Launch ! " display warns of the possible for Novac . Jamming all of the doors closed is worth 540 XP ( 45 XP each ) with no modifiers , such as Well Rested or Swift Learner . This is 60 XP less than what the sentry bots are worth ( 50 XP each ) . Though killing the bots requires ammunition or other resources that may be in scarce supply , most have in their inventory , making the ammunition investment worthwhile . " Second floor . You may gain semi - free access to the second floor by passing a 7 Intelligence challenge at one of the mobile facial recognition scanner s . may help you if your Intelligence isn ' t high enough . You also have the option of quickly finding a very easy hackable computer on this floor to add your facial data to the database . A second floor security card can be found in one of the rooms on this floor . It is in the same room as the terminal where you can print the third floor executive pass . This is required to get past the maintenance robots who will request that you vacate the floor , even if you ' re visiting between the hours of 10AM and 5PM . There is a door that leads to a room " " REPCONN Office Main Floor " " that requires a keycard to access . Inside there is a hole in the floor that will lead to the unique Q - 35 matter modulator plasma rifle , bypassing the very - hard locked door and terminal . There is a hard locked terminal on this floor at which you may print out a pass that allows safe passage on the top floor . This is useful in the event that you are unable to hack the very hard locked terminal allowing access on the top floor and if you are unable to pass the 7 Luck check with the mobile facial recognition scanner . To the left of this terminal , along the back wall is a first aid box that may be invisible to the player until they scroll over it . Third floor . In order to remain protected from the robots , you must possess a 7 or higher Luck or an Intelligence of 2 or less which allows you to guess the password ( which is Ice Cream ) . Giving the correct password once is all that is required . You can also find a REPCONN third floor security card in Piers Isley ' s close to two dead Brotherhood of Steel paladins near the main entrance to the third floor . In the room with an Average lock on the second floor ( across the hall from the locked entrance to the main floor ) is another terminal with an encrypted message on it . This contains the password to Isley ' s terminal on the 3rd floor , which you would otherwise have to hack . It is possible to destroy the mobile facial recognition scanners and sneak around the floor , but without high sneak this will almost surely trip a security alarm and release sentry bots . You also have a choice of disabling the robots on one of the executive computers . If you do so , you can then destroy the maintenance and scanner bots with no impact to Karma . The alarms also will not go off . Thirdly , simply destroy the first scanner robot you encounter before it talks to you . The alarms will not go off and no other robots on the floor will interact with you . You will also visit during the quest Still in the Dark for the BoS to find the missing patrol . The missing patrol can be found dead on the third floor ; you are free to loot their T - 51b power armor and s . Nearby lies a skeleton and Piers Isley ' s Briefcase ; it contains 200 and a REPCONN third floor security card allowing you to move on the third floor without the harassment from robots , as well as letting you open the Very - Hard locked door ( on the first floor ) to the Q - 35 Matter Modulator . It should be noted that even if you fail the identification challenge of the robots on the third floor , the 30 seconds they give you to leave is ample time to empty the briefcase and run once you know where it is . Appearances . REPCONN headquarters appears only in " " .