Masada
Masada was a Starfleet officer, assigned to the  as science officer in 2267. 

Upon the arrival of the Constellation to system L-374, Masada reported the breakup of L-374 IV.

Later, when the Constellation encountered an extragalactic "planet killer," Masada was beamed down to L-374 III with the rest of the Constellations complement by Commodore Matt Decker, and was killed when the device destroyed that planet. ()

Appendices

Background information 

According to the , Masada was probably "named for the  where Jews defied Roman legions, eventually committing suicide en masse rather than surrender."

Apocrypha 
In several Pocket Books novels, Masada was named Guillermo Masada, and was a Starfleet lieutenant who was also Decker's second officer. 

The USS Masada was a hijacked  tug in Interplay's  game.''

External links 
 
 

fr:Masada
ja:マサダ
Starfleet personnel (23rd century)
Individuals
Starfleet sciences personnel