Aviation Survival Technician is the challenging job is featured prominently in a film that stars  Kevin Costner, Ashton Kutcher and what actress?
Melissa Sagemiller
Aviation Survival Technician
Aviation Survival Technician is the United States Coast Guard term for its "rescue swimmers".
 They are trained at the U.S. Coast Guard's enlisted Aviation Survival Technician/Rescue Swimmer school at Coast Guard Air Station Elizabeth City, North Carolina.
 The challenging job is featured prominently in the 2006 film "The Guardian", starring Kevin Costner and Ashton Kutcher.
The Guardian (2006 film)
The Guardian is a 2006 action-adventure drama film directed by Andrew Davis.
 The film stars Kevin Costner, Ashton Kutcher and Melissa Sagemiller.
 The film's title is introduced by a mythic tale: people lost at sea often claim they feel a presence lifting them to the surface, breathing life into their bodies while they are waiting for help to arrive.
 They call this presence "The Guardian".
 The setting for the film is the United States Coast Guard and their Aviation Survival Technician (AST) program.
 "The Guardian" was released on September 29, 2006.
Aviation Rescue Swimmer Badge
The Aviation Rescue Swimmer Badge is awarded to all United States Coast Guard personnel upon completion of the Aviation Survival Technician school in Elizabeth City, North Carolina. Guess Who (film)
Guess Who is a 2005 American comedy film about race relations directed by Kevin Rodney Sullivan.
 It is a loose remake of the 1967 film "Guess Who's Coming to Dinner", in the form of a romantic comedy.
 While the 1967 film covered interracial romance of a black man with a white woman, the 2005 film covered the topic of a white man with a black woman.
 The film stars Bernie Mac, Ashton Kutcher, and Zoe Saldana. Punk'd
Punk'd is an American hidden camera-practical joke reality television series that first aired on MTV in 2003.
 It was created by Ashton Kutcher and Jason Goldberg, with Kutcher serving as producer and host.
 It bears a resemblance to both the classic hidden camera show "Candid Camera" and to "TV's Bloopers & Practical Jokes", which also featured pranks on celebrities.
 Being "punk'd" referred to being the victim of such a prank.
 New episodes hosted by King Bach and DeStorm Power air on BET. Silverado (film)
Silverado is a 1985 American western film produced and directed by Lawrence Kasdan, written by Kasdan and his brother Mark.
 It stars Kevin Kline, Scott Glenn, Danny Glover and Kevin Costner.
 The supporting cast features Brian Dennehy, Rosanna Arquette, John Cleese, Jeff Goldblum and Linda Hunt. Killers (2010 film)
Killers is a 2010 American action comedy film directed by Robert Luketic and starring Katherine Heigl and Ashton Kutcher.
 The film was released on June 4, 2010.
 The film centers on a young woman (Heigl) who meets the man of her dreams (Kutcher) who turns out to be an assassin. Waterworld
Waterworld is a 1995 American post-apocalyptic science fiction action film directed by Kevin Reynolds and co-written by Peter Rader and David Twohy.
 It was based on Rader's original 1986 screenplay and stars Kevin Costner, who also produced it with Charles Gordon and John Davis.
 It was distributed by Universal Pictures. Ashton Kutcher
Christopher Ashton Kutcher ( ; born February 7, 1978) is an American actor and investor.
 Kutcher began his career as a model and began his acting career portraying Michael Kelso in the Fox sitcom "That '70s Show," which aired for eight seasons.
 He made his film debut in the romantic comedy "Coming Soon" and became known by audiences in the comedy film "Dude, Where's My Car?
", which was a box office hit.
 In 2003, Kutcher appeared in romantic comedies "Just Married" and "My Boss's Daughter" and, the same year, he created, produced, and hosted "Punk'd" which aired on MTV for five seasons until its revival in 2012.
 In 2004, Kutcher starred in the lead role of the psychological film "The Butterfly Effect" and gained public recognition. Benny Ciaramello
Benjamin "Benny" Ciaramello"' (born April 4, 1981) is an American actor.
 He first appeared in the blockbuster remake of "War of the Worlds" directed by Steven Spielberg in 2005, next in the independent film "Saint Francis" alongside Dita Von Teese, and then later that same year in "The Guardian" alongside Ashton Kutcher and Kevin Costner.
 He would continue on next to star opposite Isabella Rossellini in the showtime pilot "Filthy Gorgeous" written by Ron Nyswaner the Academy Award nominated writer of the film "Philadelphia" and produced by Neil Meron and Craig Zadan the Academy Award-winning producing team of "Chicago".
 However, it wasn't until two years later that he became most known to the public for his role as Santiago Herrera, the troubled delinquent in season 2 of the Emmy Award-winning "Friday Night Lights".
 Shortly after, he signed a deal with ABC in which he guest starred on multiple programs for the network including his recent work as Scott Murphy in the ABC series "Secrets and Lies" opposite Juliette Lewis and Ryan Phillippe in 2015.
 He has recently been cast in the 1920s crime film "Live By Night" as Paulo Bartolo alongside Ben Affleck and Chris Messina.
 The film will be directed by Affleck, produced by Leonardo DiCaprio and Warner Brothers, and is set to be released in October 2017.