Mobile base crawler The mobile base crawler is a large command vehicle found at Adams Air Force Base in the " Fallout 3 " add - on " Broken Steel " . Background . It was originally a space shuttle orbiter mobile platform that the Enclave have appropriated with newly developed technology and a huge satellite array . It now serves as a mobile central command center for the Enclave , a location to stash their most valuable technology . It is also used to launch orbital strikes as shown during Death From Above and Who Dares Wins from the Bradley - Hercules satellite . This battle station is also where the elite Squad Sigma train and deathclaw experiments continue . Location and entry . The mobile base crawler is located at Adams Air Force Base , on the eastern side . The crawler can only be entered after the terminal to lower the ramp has been activated ; the terminal becomes accessible during the quest , Who Dares Wins . Layout . The interior consists of 4 parts : Base floor . The first area is the base floor and is called mobile base crawler . Stiggs , an Enclave engineer who will help the Lone Wanderer if he is allowed to live , can be found here . If the alarm sounds Enclave Squad Sigma will appear . There is also a small room behind a pulse field which contains various materials and a workbench . Behind another repulsion field lies an armory which contains several weapons , ammunition and armor . The repulsion fields around the base can be turned off via nearby control panels . When these panels are activated there will be four options : Launch platform base . The second part is the launch platform base . This consists of a deathclaw research facility , where two deathclaws can be found and the slo - burn flamer is on a small platform where two more repulsion fields can be activated . At the deathclaw research facility there is a security terminal that unlocks all doors and a robot control terminal with four options : There is also a medical bay on the launch platform base , in here several rooms with medical facilities , several toilets , the sleeping quarters , dining room and a kitchen can be found . There is also a storage room directly below ( down the stairs ) from the door to the launch pad . Inside to the right are five missiles hidden in a bucket in the corner on top of a container . There is also an armory , requiring 75 Lockpick skill to enter , where several weapons with ammunition , including the precision Gatling laser and an alien blaster with alien power cell s ( some in average locked weapon crates ) , can be found . Roof . Between the launch platform base and the satellite control tower is the roof . On the roof there are 3 landing pads for Vertibird s , on which a Vertibird will set down several Enclave soldiers . There are also 2 small huts with some ammunition . There are 5 sentry bots here that can be hacked using an available terminal . Satellite control tower . The satellite control tower consists of 3 floors , which can be reached through a staircase or by walking up 3 different sets of stairs . Some ammunition box es can be found here . On the third floor there is a terminal which contains information about an Enclave scientist who hates it there ; this terminal will also have a note saying that they have locked all the storage doors to keep in the malfunctioning robots ( if they have been set against their masters ) . There is also a terminal which unlocks all doors . The satellite uplink terminal is also here , which allows control over the orbital satellites . The terminal gives the choice to fire on one of the following targets : After a target has been chosen the Lone Wanderer can go outside where Sentinel Lyons will come to the rescue with a stolen Vertibird . Related quest : Who Dares Wins . It is necessary to go inside the mobile base crawler and launch an orbital strike to complete " Broken Steel " as part of the last main quest of the add - on .