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Jefferson Blackmer was a Human male Starfleet officer and with the rank of lieutenant commander he was assigned to the first Deep Space 9 in the 2380s as chief of security and later became the first officer of the second station that was built after the original was destroyed in 2383.


Early career

Starting out in Starfleet Academy as a command student, Blackmer transferred to security before graduation and was posted at Starbase 189 as his first assignment in 2365. After a five year tour, Blackmer transferred to Helaspont Station and completed a second five year mission there.

While performing well on his evaluations, Blackmer did gather several demerits and was reassigned from station duty to a series of starships, beginning in 2375, which included the starships USS Trieste, USS Nova, USS Sarek, and the USS Bellerophon. Blackmer was eventually assigned to the USS Perseverance where he rose to the position of Chief of security and was promoted to lieutenant commander.

Deep Space 9

Shortly after his promotion, however, the position of Security Chief on Space Station Deep Space 9 became available after the death of Lieutenant Commander Evik Nath. Due to his familiarity with stations, and his preference to serve aboard them, Blackmer requested a transfer to the station and was reassigned there in August 2382. However, his early time on Deep Space 9 was plagued by problems developing relationships with the crew. While he was able to develop a friendship with Cenn Desca and Prynn Tenmei, his relationship with Captain Ro Laren was rocky as she did not trust him. In time he was able to develop a working relationship with the Captain.

In June 2383, Blackmer spearheaded the investigation into threats to destroy DS9. He was present on the station during an attack by members of the Typhon Pact designed to hide the theft of Dominion technology. During this assault he and his team discovered a series of bombs planted aboard the station; however, he did not believe them a threat to the station as they did not appear to be of sufficient yield to destroy the station. (ST - Typhon Pact novel: Plagues of Night)

The new Deep Space 9

He was then assigned as Chief of Security on Deep Space 9 (II) during construction and when it was completed. (ST - The Fall novel: Revelation and Dust)

Like previous security officers of Deep Space 9, Blackmer often investigated Quark. (DS9 eBook: Lust's Latinum Lost (and Found))

In December, 2385, with the resignation of Cenn Desca from the Bajoran Militia Blackmer was made the acting first officer, while still functioning as chief of security.

In January, 2386, Blackmer was promoted to first officer of Deep Space 9. (DS9 novel: Ascendance)

Personal life

Blackmer dated a woman called Sharon for two years. (DS9 novel: Sacraments of Fire)



Starfleet service record

location assignment dates rank or rate assignment insignia rank insignia
Starfleet Academy student officer 2361-2365 cadet Assignment badge. Collar insignia.
Starbase 189 security officer 2365-2370 ensign Rank insignia. Collar insignia.
Helaspont Station 2370-2375 lieutenant Collar insignia.
Assignment badge. Collar insignia.
USS Trieste one or two years per vessel
USS Nova
USS Sarek
USS Bellerophon
USS Perseverance
chief of security 2382 lieutenant commander Collar insignia.
Deep Space 9 2382-2383
Deep Space 9 (II) 2384-2386
executive officer 2386 onward Collar insignia.


Preceded by:
Evik Nath
Chief of security of Deep Space 9
Succeeded by:
Preceded by:
None: Inaugural Holder
Chief of security of Deep Space 9 (II)
Succeeded by:
Preceded by:
Cenn Desca
Executive officer of Deep Space 9 (II)
Succeeded by:
Helaspont Station and residents
station personnel BartelsJ. BlackmerFarishE. FreemantleFrenchJ. HarrimanJ. San LuisA. Sasine Emblem of the United Federation of Planets Seal of the Federation Starfleet
station residents JaviersG. Rochambeu
Starbase Deep Space 9 personnel and residents (original station)
station personnel K. AdabweM. AhzedT. AimatsuAleco V.R. AlfonzoAlle T.AltmanAmranK. AndrewsT. AneN. AponteJ. AsheAylam E.J. S. BashirBattes A.BileckiJ. BlackmerP. BoudreauxS. BowersJ. BroomeCardokCarltonS. CarsonCenn D.J. ChaoJ. ChavezH. CollinsF. CortezCostelloCryanD. CzirakyG. DavisE. DaxJ. DaxDevroS. DouglasM. EddingtonEddonEtana K.Evik N.Gaysd T.Girani S.GoodmanGordimerGreskrendtregkGueretteHageHava R.T. JastJataq'qatS. JonssonKaboKahrimanisKellyKira N.V. KnezoJ. KurlandKurnT. KwiatkowskiS. ch'LarnC. LingP. MatthiasMcCormickMcEwianK. MerimarkMonyodinT. MooreMoruI. MuckerheideMunsonNalan B.J. Si NaranNedani I.Nev R.NguyenNogM.E. O'BrienOccinoOdoD. ParksPertweeH. PetersenPhongsitG. PrimminRedacch'RellenK. RichterRo L.RomG. RonessSangerSarish M.A. SelznerJ. SenkowskiSetrin Y.R. th'ShantShul T.Shula S.SimakB.L. SiskoZ. SlaineJ. SmithN. SthiliW. StinsonM. StrangStrekC. SwannigTaganaS. TaranS. TarsesA. TaverasDarl TavrosTelnorriP. TenmeiTerekT. ch'ThaneTollandM. TomsonT'PeynTrulliE. Vaughnzh'VeskVu K.Wasa G.Wayeh S.D. WilkensWorfWoros K.YamaguchiD. YarrowYevlin M. Emblem of the United Federation of Planets. Bajoran emblem.
Seal of the Federation Starfleet. DS9 insignia.
station residents AluuraA. WyossL. ArlinAriosBarys K.Betenn B.Betenn C.Betenn K.BokatBrocBroikBylaCadaraCaprilChalan A.Chon S.ChramConpapDalba S.DrakV. FontaineA. FontanaFreylaFroolE. GarakGrimpE. GrofHadronHatram N.HetikJas-qalJhakkaKagaKalawLeetaLondar P.MaikiMalor B.Malor T.MardahMartokMirehMo'NekeMornM'PellaKeiko O'BrienKirayoshi O'BrienMolly O'BrienQuarkRasmus S.RhitSardaS'taassN. SardopolousShul AbaJ. SiskoT'AraTaran'atarJ. TharenTigart H.Tir R.Tora Z.TreirVisshKasidy Yates
Starbase Deep Space 9 personnel and residents (second station)
station personnel Aleco V.AllasarE.g. AnsargJ. BashirB. BecerraV. BixxJ. BlackmerP. BoudreauxJ. CandlewoodCardokCenn D.H. CollinsJ. CollinsB. CrusherA. d'ArnaudV. deGromO. DellasantG. DesjardinsEtana K.S. DouglasHava R.B. HerriotE. JuarezV. KnezoS. ch'LarnP. MatthiasK. MerimarkE. MinnarNogM.E. O'BrienD. PhloxS. RavidK. RichterRo L.N. SaygurShul T.Z. SlaineW. StinsonT'LuneP. TenmeiL. ThorneValinarVerlonR.K. VissP. WalenistaZhang S.
station residents Altek D.AluuraBroikDamas H.FroolGrimpKala M.M'PellaOrcamQuarkShmengeUlu L.Zirk