Who Dares Wins Who Dares Wins is the final " Fallout 3 " main quest and achievement that is added to the game in the " Broken Steel " add - on . Detailed walkthrough . Paladin Tristan has tasked you with infiltrating the Enclave ' s final , massive base at Adams Air Force Base , and destroying it with an orbital strike . The quest begins at White House Plaza . The utility tunnel that leads to the White House now also has a connection to the Presidential metro , which should lead directly to Adams Air Force Base . Reach White House Plaza through any means you have , and enter the tunnels . The metro is crawling with feral ghoul s , Mister Gutsies and sentry bots . You ' ll proceed down several different tunnels before meeting with M . A . R . Go . T . , the protector and dispatcher of the metro . The robots ( and M . A . R . Go . T , to some extent ) are initially hostile , but if you pass a difficult Speech or Science check , or present a valid Senate employee ID , M . A . R . Go . T will mark you as friendly , and you ' ll have a chance to use her for information or help . Contain the Security Breach . Among other things , you can learn that the train to Adams is offline , due to a " security breach " which has resulted in " the forced removal of a main fuse . " M . A . R . Go . T can repair the fuse and train , but only if the breach is contained . According to her , the intruders have depleted 22 % of the metro security units , have no internal body heat , and are emitting lethal levels of radiation . The metro units should be able to handle the breach at lower player character levels , but higher levels can result in facing several more deadly foes , which will make short work of the sentry bots , and you too , if you aren ' t careful . If you aid in containing the breach , the Presidential Sentinel Unit will repair the Adams tram for you ; if not , you can find the main fuse on its body , as well as in the room with the fuse box , and can use it and a Repair check to fix the train yourself . Enter Adams Air Force Base . After a quick ride on the train , you ' ll wind up in the Adams metro station . Continue through the tunnels , and you ' ll encounter the first of many Enclave soldiers in Adams . Reach the surface , climb the stairs , and take a left to find the " Resupply Crate " Tristan mentioned . Inside is a fully repaired Tesla cannon , 50 electron charge pack s , 50 microfusion cell s , and your orders , contained within a voice recording , courtesy of Tristan . There is also a dead robobrain nearby containing a few energy cells . Proceed to the right , and begin the long trek to the mobile base crawler . The path is full of Enclave troops , regular and Hellfire , banks of turrets , deathclaw s , and several combat ready vertibird s . Make use of the Tesla cannon to destroy the vertibirds in one shot , and anything else ( guns , grenades , followers , even several Enclave artillery batteries ) to stave off the Enclave hordes . As you approach your next objective , you ' ll begin to see vertibirds gunning down the runway , lasers firing in all directions . They ' re firing on a contingent of Brotherhood soldiers , who are the " distraction " Tristan promised . It doesn ' t work very well , though , as the Brotherhood soldiers are outnumbered , outgunned and hold the low ground . Find the access terminal to lower the ramp on the Mobile Platform . The mobile base crawler can only be entered via a ramp . To lower the ramp , you ' ll need to enter the Air Traffic Control Tower , and find the Main Access terminal . When you reach the main battlefield on the runway , take a right and enter the small building through a set of stairs on the west side . Inside are a few Enclave robots , which can range from robobrain s to sentry bots , depending on your level . When you reach the top , activate the unlocked terminal and hit the " Lower Access Ramp " entry . Beware , though , that as you enter the control tower , three vertibirds will appear overhead , the last of which fires three missiles straight at the tower . The resulting explosions could easily cripple or kill you , so it is best to take cover on the stairs . Alternatively , you can shoot down the vertibirds with the Tesla cannon , if you act quickly enough . Enter the Enclave Mobile Platform . Make your way back down to the runway , and head on over to the ramp . There are several more Enclave troops , but a Brotherhood of Steel task force will arrive and cover you . Run up the ramp , and enter the final Enclave stronghold . Destroy the Enclave Mobile Platform with an Orbital Strike . The first thing you come across is an Enclave Repulsion Field . Using the blue panel to the left , you can deactivate it ( Science 80 ) , set a timed charge ( Explosives 50 ) , or smash the control panel . Smashing the panel will cause an explosion ( which will damage you ) , as will setting the charge ( the difference being that you have time to escape ) . Either way , the field will still be partially active , and passing through it will cause damage . If deactivated with Science , the field will be harmless . Turning left will introduce you to Enclave Squad Sigma after an alarm goes off . Turning right and heading into the repair bay yields plenty of ammunition , as well as an encounter with Stiggs , who fixes the robots . Talking with him gives some useful information : Heading up the ladder in the repair bay or the stairs where Sigma Squad attacked will lead to the second level . Your target is the mainframe in the center of the floor . The deathclaw research facility should contain one or two Enclave - controlled deathclaws , which will be a great asset if you still have the deathclaw control scrambler . The mainframe is locked behind several " High Clearance " doors , which can only be opened with a High Clearance keycard . The various Enclave officers each carry one , which will open all the doors . The mainframe itself is divided into two sections : Door control and Robot control . The Door control terminal is unlocked , and can be used to unlock any doors on the floor , the Armory , and the doors leading to the Platform . The Robot terminal is locked Hard , but if hacked , you can deactivate all the robots , or scramble their targeting parameters . If you have the Robotics Expert perk , you can even reverse the friend - or - foe settings , marking the Enclave as hostile , and yourself as friendly . Head to the Satellite Tower . Once inside , head to the top , to the terminal . Make sure you ' ve thoroughly searched the crawler , then hit " Fire Payload " and choose your target : Only two of the targets can be fired upon : Adams AFB Platform , or the Citadel . Be warned , anything in the Crawler will be lost forever , no matter which choice you make , so clear it out before you make the decision . Once you make your choice , unlock the door from the active terminal to your right , and head through the door at the top back outside , where a Brotherhood of Steel vertibird lands to get you out . If Sentinel Lyons survived the activation of Project Purity , she will personally escort you to the vertibird . If you chose the Citadel : You are rewarded with 1000 negative karma , and on the flight back the pilots seem to think the vertibird is malfunctioning when the Citadel won ' t respond to radio . Upon landing and seeing the smouldering ruins , they quickly pick up that it was you , and attempt to kill you , deeming you a traitor and a murderer . Any other Brotherhood of Steel members you meet , like in the Washington Monument , GNR building , White House Plaza , Arlington Library , and the Jefferson Memorial , will be hostile as well . You also can enter the Citadel ' s hidden armory , filled with plenty of goodies such as Tesla cannons , alien power cells , Nuka - grenade s , mini nukes , and Callahan ' s Magnum . If you chose Adams AFB Platform : You are rewarded with 1000 positive karma , and the vertibird lands a little off Adams AFB to allow you to watch the missiles strike . After hopping back on the vertibird , you are taken to the Citadel , where Elder Lyons is waiting with a heart - warming speech of thanks . You may then speak with Scribe Rothchild and Paladin Tristan for two additional unmarked quests . You are also allowed to return to Adams AFB after the quest where there are 8 Tesla cannons spread about in 4 different Resupply Crates . Three Dog will also occasionally make a funny report about your deeds and tell his " children " to have pity on the Enclave ; they ' re homeless after all ! Behind the scenes . " Who Dares Wins " is the regimental motto of the British Special Air Service ( SAS ) special forces , coined by the founder David Stirling . One of their main roles ( and the role for which they were originally conceived ) during the Second World War was the destruction of Axis aircraft and positions at air bases behind enemy lines in North Africa . The saying comes from the similar Latin expressions , " Qui audet vincit " and " Qui audet adipiscitur " .