Answer the question at the end by quoting:

Tropic Thunder is a 2008 black satirical action comedy film directed by Ben Stiller, who stars with Jack Black and Robert Downey Jr. as a group of prima donna actors who are making a fictional Vietnam War film. When their frustrated director drops them in the middle of a jungle, they are forced to rely on their acting skills to survive the real action and danger. The screenplay by Justin Theroux, Stiller, and Etan Cohen was from a story by Stiller and Theroux. The film was produced by Stuart Cornfeld, Stiller and Eric McLeod for Red Hour Productions and DreamWorks Pictures as an international co-production between the United States, Germany, and the United Kingdom.
A trailer for the film was released in April 2008. The Calgary Herald gave it a rating of 3/5, commenting: "This could either be good or very, very bad." Gary Susman of Entertainment Weekly questioned whether the film would "... turn into precisely the kind of bloated action monstrosity that it's making fun of." The trailer received the "Best Comedy Trailer" award at the 9th annual Golden Trailer Awards. DreamWorks also released a red band trailer, the first of its kind used by the studio to promote one of its films.  Stiller, Downey, and Black appeared on the seventh-season finale of American Idol in a sketch as The Pips performing with Gladys Knight (via archival footage). The three actors also later performed a sketch at the 2008 MTV Movie Awards which featured the actors attempting to create a successful viral video to promote the film with awkward results. In September 2008, Stiller and Downey attended the San Sebastian International Film Festival to promote the film. A screening was shown, but it was not chosen to compete against the other films at the festival.  Between April 2008 and the film's commercial release in August 2008, the film had over 250 promotional screenings. On August 3, 2008, Stiller, Downey, and Black visited Camp Pendleton, a U.S. Marine Corps base in California, to present a screening to over a thousand military members and their families. The screening was on behalf of the United Service Organizations and included the actors heading to the screening by helicopter and Humvees. On August 8, 2008, a special 30-minute fictional E! True Hollywood Story aired about the making of Tropic Thunder. In video games, a themed scavenger hunt was incorporated into Tom Clancy's Rainbow Six: Vegas 2, and Stiller allowed his likeness to be used in the online Facebook application game based on the film.  As a tie-in for the film's release, Paramount announced it would market the energy drink known in the film as "Booty Sweat". Michael Corcoran, Paramount's president of consumer products, commented on the release: "We're very excited, because it has the potential to live for quite a while, well beyond the film." The drink was sold in college bookstores, on Amazon.com, and at other retailers.

Was the film successful?

Between April 2008 and the film's commercial release in August 2008, the film had over 250 promotional screenings.



Answer the question at the end by quoting:

Stephen Ray Vaughan (October 3, 1954 - August 27, 1990) was an American musician, singer, songwriter, and record producer. In spite of a short-lived mainstream career spanning seven years, he was one of the most influential guitarists in the revival of blues in the 1980s. AllMusic describes him as "a rocking powerhouse of a guitarist who gave blues a burst of momentum in the '80s, with influence still felt long after his tragic death." Born and raised in Dallas, Texas, Vaughan began playing guitar at the age of seven, inspired by his older brother Jimmie.
In May 1969, after leaving the Brooklyn Underground, Vaughan joined a band called the Southern Distributor. He had learned The Yardbirds' "Jeff's Boogie" and played the song at the audition. Mike Steinbach, the group's drummer, commented: "The kid was fourteen. We auditioned him on 'Jeff's Boogie,' really fast instrumental guitar, and he played it note for note." Although they played pop rock covers, Vaughan conveyed his interest in the addition of blues songs to the group's repertoire; he was told that he wouldn't earn a living playing blues music and the band parted ways. Later that year, bassist Tommy Shannon walked into a Dallas club and heard Vaughan playing guitar. Fascinated by the skillful playing, which he described as "incredible even then", Shannon borrowed a bass guitar and the two jammed. Within a few years, they began performing together in a band called Krackerjack.  In February 1970, Vaughan joined a band called Liberation, which was a nine-piece group with a horn section. Having spent the past month briefly playing bass with Jimmie in Texas Storm, he had originally auditioned as bassist. Impressed by Vaughan's guitar playing, Scott Phares, the group's original guitarist, modestly became the bassist. In mid-1970, they performed at the Adolphus Hotel in downtown Dallas, where ZZ Top asked them to perform. During Liberation's break, Vaughan jammed with ZZ Top on the Nightcaps song "Thunderbird". Phares later described the performance: "They tore the house down. It was awesome. It was one of those magical evenings. Stevie fit in like a glove on a hand."  Attending Justin F. Kimball High School during the early 1970s, Vaughan's late-night gigs contributed to his neglect in his studies, including music theory; he would often sleep during class. His musical career pursuit was disapproved by many of the school's administrators, but he was also encouraged by many people to strive for a career in art, including his art teacher. In his sophomore year, he attended an evening class for experimental art at Southern Methodist University, but bailed when it conflicted with rehearsal. Vaughan later spoke of his dislike of the school and stated that he had to receive a daily note from the principal about his grooming.

How long was he with Liberation?
In mid-1970, they performed at the Adolphus Hotel in downtown Dallas,