Ensign deRoos was a 23rd century Human Starfleet officer assigned to the Federation starship USS Enterprise in the 2260s. In 2270, deRoos was on duty at the engineering station on the bridge when the Enterprise returned to Earth at the conclusion of its five-year mission. (TOS - The Lost Years novel: The Lost Years)

USS Enterprise (NCC-1701) engineering personnel
under Rasmussen & April BrownellChangChoFourrierGraffHartKursleyMarvickMcCormickNumber OnePowellRobertsSaffireThompsonThorvaldsenWood under Pike AbdelnabyArs DanBarryBrienHazarstennajGraceBurnsteinPitcairnLouvierSamsonScottSpahnvan HansenWrightYamata UFP emblem image. USS Enterprise operations assignment insignia.
under Kirk (1st 5-year mission) AndresAndrewsAntonoffAzizBarnhartBatesBeckerBerkeleyBregmanBurdockBurrowsCampeasCelauxChalmersChatusramChoColfaxCorcoranCormanCortezCrandallCriderCritelliDastagirDavisDeLongdeRoosDeSalleDevlinDixonDouglasDuboisDuchampsEdwardsFrostHarperHarrisonD. GablerF. GablerGallowayGardnerGarvinGordonGrantGreenHartHazarstennajHolgerssonJacobsJamesJenkinsKaplanKopkaKrenskyKyleLanzLefebreLemliLeslieLewisLopezLoupasLylesMacPhersonMarkhamMassachiC. MastersV. MastersMarkhamMattMcConelMcDuffMcPheeM'deguMikhalisMillerMuellerNagataNasonNikkatsuNovaObaO'NeilOrsayPetersonRamirezRennerRileyRivieraRogersRostofskiRussSatterfieldSchirmeisterScottSenifSepopoaShallertSheaShigedaSinghStanleySteeleStrykerSulernovaTamTenneyTersarkisovThomasWashburnWatkinsWatsonWhiteheadB. WilsonWilsonWinfieldWyattZellich
subsequent missions under Kirk & Spock AthendëBradleyCarpenterM. ClearyDettnerGrenniHadleyHeinemanIhirianJacobsKasatsukiKugelLayneLydiaNörenbergPrestonQuartonR'trikahiRandRossSchneiderScottTaskulThoboTwo FeathersWeinbergerWilliams UFP emblem image. USS Enterprise engineering assignment insignia.
see also: administrative personnelcommunications personnelmedical personnelpilots & flight control personnelsecurity & tactical personnelsciences personnelsenior staff • unnamed (2240s and 2250s2260s2270s and 2280s)
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