Hayes (Ensign)
Ensign Hayes served on the  in the 2370s.

In one of the quantum realities seen by Worf, Ensign Hayes responded from main engineering when the Enterprise-D received damage due to a Cardassian attack. He informed Captain Jean-Luc Picard that Commander La Forge was brought to sickbay due to plasma burns. () 

He was at tactical when Lursa and B'Etor's Bird-of-Prey decloaked in front of the Enterprise-D at the Amargosa observatory. 

Hayes was later on duty on the bridge and witnessed Data singing at his operations station. He also took a station during the Duras' attack on the Enterprise-D and was present when the Duras' ship was destroyed by a photon torpedo. ()

de:Hayes (Fähnrich)
Humans
Starfleet operations personnel
USS Enterprise (NCC-1701-D) personnel