Question: What is the name of the United Football League team for which former NFL player Edgerton Hartwell payed?

Context articles: Don Looney
Pottstown Firebirds
Joe Green (American football)
Otis Sistrunk
Bill Ring
Edgerton Hartwell
Doug Colman
List of Carolina Panthers seasons
Wasswa Serwanga
Las Vegas Locomotives

John Don Looney (September 2, 1916 – April 5, 2015) was a professional American football end in the National Football League.
 He was born in Sulphur Springs, Texas.
 He played three seasons for the Philadelphia Eagles (1940) and the Pittsburgh Steelers (1941–1942).
 He was the first receiver in NFL history to have over 100 yards receiving in each of his first two games, a feat which was not equaled until the 2008 NFL season by another Eagles wide receiver, DeSean Jackson.
 At the time of his death, Looney was the second oldest living former NFL player.
 He was the father of NFL running back Joe Don Looney, who later died in a one-person motorcycle accident after his NFL career ended.
The Pottstown Firebirds were a professional American football minor league team and member of the Atlantic Coast Football League from 1968 to 1970.
 The Pottstown Firebirds were former NFL football players, former college football players, and former high school football players who loved to play the game of football.
 The Firebirds were originally a "farm club" of the Philadelphia Eagles and were provided with equipment/helmets already emblazoned with Eagle wings.
 Only a few Firebirds ever moved up to NFL teams.
 The Firebirds affiliation with the Philadelphia Eagles was short-lived and was withdrawn in 1970.
 The Pottstown Firebirds played their home games at Pottstown High School stadium.
 In their final two seasons of existence in Pottstown (1969 and 1970), the Firebirds won the league championship.
Joseph David Green (born November 20, 1948) is a former professional American football defensive back and return specialist for the New York Giants of the National Football League.
 He attended Bowling Green State University, where he was named the Mid-American Conference Defensive Player of the Year in 1969 as a senior on the Bowling Green Falcons football team.
 He was undrafted in 1970 and picked up that year by the Giants.
 Green played for the Giants for two seasons, and returned seven kickoffs for 132 yards.
 He started in two games on defense in 1971, and recorded the only touchdown of his pro career that year as he returned a fumble for a score against the Green Bay Packers.
 He is the father of former NFL player Barrett Green.
Otis Sistrunk (born September 18, 1946 in Columbus, Georgia) is a former professional football player who played seven seasons as a defensive lineman, from 1972 to 1978.
 He played his entire National Football League (NFL) career with the Oakland Raiders.
 Sistrunk later became a professional wrestler in the National Wrestling Alliance (NWA).
 He is a distant cousin to former NFL player Manny Sistrunk.
William Thomas Ring (born December 13, 1956) is a former NFL running back who played six seasons in the National Football League from (1981–1986).
 He was a reserve and special teams player for the San Francisco 49ers during the early success of the Bill Walsh era.
 Ring was considered a fan-favorite who was thought too small and too slow to be an NFL player but somehow found a way to hang on in the league for 6 years.
 He caught his first and only TD pass on December 6, 1981 against the Cincinnati Bengals at Riverfront Stadium, a game the 49ers would win 21-3.
 He currently resides in the San Francisco Bay Area with his wife, Connie, and their three children.
 His son, Billy is also a football player, and was a Safety for the San Jose State Spartans of San Jose State University.
 He also has two daughters that both played D1 volleyball.
 The oldest, Katie, played for the UCSB Gauchos, and the youngest, Christie, played for the SDSU Aztecs.
 .
Edgerton "Ed" Hartwell II (born May 27, 1978) is a former American football linebacker.
 He played college football at Western Illinois and was drafted by the Baltimore Ravens in the fourth round of the 2001 NFL Draft.
 Hartwell was also a member of the Atlanta Falcons, Cincinnati Bengals, Oakland Raiders and Las Vegas Locomotives.
Douglass Clayton Colman (born June 4, 1973) is an American football coach, former player and son of former NFL player Wayne Charles Colman.
 He was a linebacker in the National Football League (NFL) for five seasons with the New York Giants, Tennessee Titans and Cleveland Browns after playing college football at the University of Nebraska-Lincoln.
 Colman is currently a special teams assistant and linebacker assistant for the Houston Texans.
The Carolina Panthers are a professional American football team based in Charlotte, North Carolina.
 The team was founded in 1993, when, along with the Jacksonville Jaguars, they were accepted into the National Football League (NFL) as an expansion team.
 The Panthers are owned by Jerry Richardson, the team's founder and a former NFL player.
Wasswa Serwanga (wasswa meaning older male twin) (born July 23, 1976) is a former American football cornerback in the National Football League and Arena Football League.
 He played one season for the San Francisco 49ers and two for the Minnesota Vikings of the NFL, and one for the Los Angeles Avengers of the AFL.
 Serwanga attended and played football for UCLA, Sacramento State University and University of the Pacific.
 His hometown is Sacramento, California where he and his brother were standout defensive backs for the Sacramento High School Dragons.
 He is the identical twin brother of former NFL player Kato Serwanga.
The Las Vegas Locomotives (called the Locos for short) were a professional American football team based in Las Vegas, Nevada that played in the United Football League.
 The team played their home games at Sam Boyd Stadium, home field for the University of Nevada, Las Vegas.
 Jim Fassel was the franchise's head coach, president, and general manager.
 The Locomotives appeared in all three UFL Championship Games, winning both the 2009 and 2010 iterations; the Locos were also the last of the four charter UFL franchises to remain in their original home city, to retain their original head coach, and to have played all of their home games at the same venue.