Clemens served as a security guard aboard the USS Enterprise-E in 2379. Clemens was part of the search and rescue team which went to Tezwa in search of Commander Riker and his missing tactical team. The bodies of Lieutenants Kelly Tierney and Matthew Barnes were found along with Master Chief Petty Officer Razka, but Riker's was nowhere to be found. (TNG novel: A Time to Kill)

USS Enterprise (NCC-1701-E) security & tactical personnel
	Chiefs: L. Addison • P. Daniels • Rowan • R. McAdams • B. Leyoro • C. Vale • S. Nave • L. Battaglia • Z. Leybenzon • J. Choudhury
	Aiken • J. Allen • Almonte • A. Balidemaj • A. Braddock • Brennan • G. Carmona • Carr • A. Chang • Chell • N. th'Chun • Clemens • Cobbins • Craycroft • K. Cruzen • P. Davila • H. de Lange • Dey • R. Duncan • S. Fillion • Floyd • R. Giudice • J. Gonzales • T. Gracin • E. Grigsby • Jarata B. • Korban • J. Jurot • Kelly • ch'Kerrosoth • E. Laird • Lightner • Le Roy • J. Lofgrin • Lopex • Liryn • F. McEwan • R. Mars • Melo • A. Munro • T. Murphy • Obarakeh • Parminder • J. Peart • Razka • B. Regnis • Sanders • N. Sirhc • A. Šmrhová • S. Stockman • N. Stolovitsky • J. Struhlem • K. Thompson • J. Travis • T'Sona • M. Vogel • F. Wriede
see also: Senior staff • Engineering • Flight Control • Medical and Counseling • Operations • Science • Security • Misc. • Unnamed