Major J. Hayes is a fictional character from the TV program Star Trek: Enterprise, played by Steven Culp, a popular actor also seen in the 5th and 6th season of The West Wing, playing the Speaker of the House. He first appeared in the third season premiere "The Xindi". The starship Enterprise (NX-01) Star Trek: Enterprise is a science fiction television series set in the Star Trek universe. ... Steven Culp as Jeff Haffley on NBCs The West Wing. ... The West Wing is a popular and widely-acclaimed American television serial drama created by Aaron Sorkin for NBC which has aired since 1999. ... The term Speaker is usually the title given to the presiding officer of a countrys lower house of parliament or congress (ie: the House of Commons or House of Representatives). ... The Xindi are also a species in Star Trek fiction. ...

Major Hayes is the leader of the elite MACO team that was assigned to Enterprise when it was sent to the Delphic Expanse. He has had rivalries with Lt. Reed, who thought that he was trying to take over security of Enterprise. He and Reed resolved their rivalry in "Harbinger". (Actually, since Reed was chief of security, he had authority over all MACOS on the ship—including Hayes, who grudgingly called Reed "sir" even though Hayes technically outranked Reed.) MACO The MACOs (Military Assault Command Operations) are an elite Terran military command in the Star Trek: Enterprise fiction universe. ... The Delphic Expanse (commonly abbreviated as The Expanse) was a region of space in the Star Trek universe, approximately 2000 light years across, surrounded by thick thermobaric clouds, with an edge located about 50 light years from Earth. ... Malcolm Reed Malcolm Reed (born September 2) is the fictional British officer on the Enterprise, in the TV series Star Trek: Enterprise. ... Harbinger is the title of an episode of Star Trek: Enterprise, from the third season. ...

Major Hayes was killed in the second-to-last third season episode "Countdown", when a Xindi-Reptilian shot him as he was beamed off of the Xindi ship, after rescuing Hoshi from the Xindi. Hayes died aboard Enterprise, under Dr. Phlox's care. Steven Culp, coincidentally, portrayed a character on JAG who also died in the same first-run broadcast week. Countdown is the title of a Star Trek: Enterprise television episode from season three. ... The Xindi are an alien race in the fictional Star Trek universe. ... A transporter on the USS Enterprise (NCC-1701-D) In the Star Trek fictional universe, transporters are teleportation machines. ... Hoshi Sato (July 9, 2128-2246) is a character in the fictional Star Trek universe and the communication officer aboard the starship Enterprise (NX-01) in the science fiction television series Star Trek: Enterprise. ... Also, Their is a guy using the nickname PhloX: irc. ... JAG (the American Military acronym for Judge Advocate General) was also used as the title of an American adventure drama television show, produced by Belisarius Productions, in association with Paramount Television Network. ...

Hayes' first name has never been revealed, although we do know his first initial—the name patch on his uniform read "J. Hayes".