Question: What profession do Fred Olen Ray and R. G. Springsteen have in common?

Context paragraphs:
Fred Olen Ray: Fred Olen Ray (born September 10, 1954) is an American film director, producer, screenwriter, actor, and cinematographer.

Biohazard (film): Biohazard is a 1985 science-fiction horror film directed by Fred Olen Ray and starring Aldo Ray and Angelique Pettyjohn.

Bikini Cavegirl: Bikini Cavegirl (also known as Teenage Cavegirl) is a softcore pornographic film made by Fred Olen Ray under the pseudonyms "Nicholas Medina" and "Sherman Scott".  It has been described as "a sexy makeover", but not a remake, of Ray's earlier film, "Dinosaur Island".  It was released directly to video in 2004 under the title "Teenage Cavegirl", and is shown on cable as "Bikini Cavegirl".

Alien Dead: The Alien Dead is a 1980 American horror film directed by Fred Olen Ray.  Ray co-wrote the script with Martin Nicholas.

The Brain Leeches: The Brain Leeches is a 1978 sci-fi film directed by Fred Olen Ray and starring Paul Jones, Marcia Scott & Ray Starr.

Mom's Outta Sight: Mom's Outta Sight is a 1998 American film, starring Hannes Jaenicke, Mary Elizabeth McGlynn and Harrison Myers.  It was directed by Fred Olen Ray and written by Sean O'Bannon.

R. G. Springsteen: Robert G. Springsteen (September 8, 1904 – December 9, 1989) was an American director of Hollywood B movies and television shows.  He was most often credited on screen as R. G. Springsteen.

Billy Frankenstein: Billy Frankenstein is a 1998 horror-comedy movie directed by Fred Olen Ray and written by his wife Kim Ray.

The Twin (2017 film): The Twin is a horror TV movie directed by Fred Olen Ray and Max Derin, starring Brigid Brannagh and Louis Mandylor.  It premiered on Lifetime on January 6, 2017.

Inferno (1997 film): Inferno (also released with the title, Operation Cobra) is a 1997 feature film directed by Fred Olen Ray starring Don Wilson, Deepti Bhatnagar and R. Madhavan.  Evan Lurie, Michael Cavanaugh and Tané McClure appear in other pivotal roles.  Wilson plays the role of Interpol agent Kyle Connors on a mission set in India.

Supporting paragraphs: Fred Olen Ray R. G. Springsteen
Answer: director