Ensign Frost was a 23rd century Human, an engineer and experienced pilot serving Starfleet on board the USS Enterprise. (TOS novel: Planet of Judgment)

USS Enterprise (NCC-1701) engineering personnel
under Rasmussen & April	Brownell • Chang • Cho • Fourrier • Graff • Hart • Kursley • Marvick • McCormick • Number One • Powell • Roberts • Saffire • Thompson • Thorvaldsen • Wood	under Pike	Abdelnaby • Ars Dan • Barry • Brien • Hazarstennaj • Grace • Burnstein • Pitcairn • Samson • Scott • Spahn • van Hansen • Wright • Yamata
under Kirk (1st 5-year mission)	Andres • Antonoff • Aziz • Barnhart • Bates • Becker • Berkeley • Bregman • Burdock • Campeas • Celaux • Chatusram • Cho • Colfax • Cortez • Crider • Critelli • Dastagir • Davis • DeLong • deRoos • DeSalle • Devlin • Dixon • Douglas • Dubois • Duchamps • Edwards • Frost • Harper • Harrison • Gabler • Galaym • Galloway • Gardner • Gordon • Grant • Green • Hart • Hazarstennaj • Holgersson • Jacobs • James • Jenkins • Kaplan • Kopka • Krensky • Kyle • Lanz • Lefebre • Lemli • Leslie • Lewis • Loupas • Lyles • MacPherson • Masters • Markham • Matt • McConel • McDuff • McPhee • M'degu • Mikhalis • Miller • Mueller • Nagata • Nason • Oba • O'Neil • Orsay • Renner • Riley • Riviera • Rogers • Rostofski • Russ • Satterfield • Scott • Senif • Sepopoa • Shallert • Shigeda • Singh • Stanley • Stryker • Sulernova • Tam • Tenney • Tersarkisov • Thomas • Washburn • Watkins • Watson • Whitehead • B. Wilson • Wilson • Winfield • Wyatt • Zellich
subsequent missions under Kirk & Spock	Athendë • Bradley • Cleary • Dettner • R. Grenni • Lasja Ihirian • Jacobs • Kasatsuki • Kugel • Layne • Lydia • Peter Preston • Quarton • R'trikahi • Janice Rand • Teresa Ross • Schneider • Montgomery Scott • Two Feathers • Washburn • Weinberger • Cyron Williams
see also: administrative personnel • communications personnel • medical personnel • pilots & flight control personnel • security & tactical personnel • sciences personnel • senior staff • unnamed

USS Enterprise (NCC-1701) flight control personnel
Under Robert April	Ferarra • Florida • Nobis • Po • Soulian	Under Christopher Pike	Mohindas • Number One • Tyler • Vincent • Wayne
Under James T. Kirk (first five-year mission)	Akrumba • Alden • Arex • Bailey • Barrows • Chekov • Cheung • DePaul • DeSalle • Farrell • Green • Hadley • Hansen • Harrison • Hwavirë • Kelso • Kerby • Kyle • Latimer • Leslie • Mitchell • Rahda • Riley • Sanchez • Shaffer • Stiles • Spinelli • Sulu • Vitali • Walking Bear
Subsequent missions under Kirk & Spock	Bryce • Chekov • DiFalco • Domenick • Ledoux • Haarv • Lee • Saavik • Ilia • Sherwood • Ryan • Sulu • T'Lara
see also: administrative personnel • communications personnel • engineering personnel • medical personnel • security & tactical personnel • sciences personnel • senior staff • unnamed