Question: Daniel Brière runs day-to-day operations for this team based in Portland, Maine.

Context paragraphs:
Association management company: An association management company (AMC) provides management and specialized administrative services to trade associations and professional associations using a for-profit approach that runs not-for-profit associations like businesses.  Many AMCs serve as an organization's headquarters, managing day-to-day operations and becoming the public face of the organization.

Cal Wells: Cal Wells (born October 12, 1955) is a businessman and former owner of PPI Motorsports.  He later served as the Executive Vice President of Operations at Michael Waltrip Racing, overseeing the day-to-day operations of the organization's three NASCAR Sprint Cup Series teams and one Nationwide Series team, until July 2011.

Greyday Productions: Greyday Productions, sometimes called simply Greyday Records, is an independent record label based in Portland, Oregon, United States.  Formed to release a new record from long-time friends Still Life, Greyday has grown from a musician run DIY collective to a full independent label.  Operated mainly by Todd Berry (who moved to Portland from Los Angeles in 2001), Greyday has a constantly changing staff of friends and interns who help with a lot of the day-to-day operations.  Greyday Records is distributed by Burnside Distribution Corporation.

Ministries of Djibouti: The Ministries of Djibouti are headed by the Cabinet.  It runs the day-to-day operations of the Government of Djibouti.  The Council of Ministers is in turn appointed by the President, the actual head of government, on the proposal of the Prime Minister, who serves as its most senior minister.

Maine Mariners (ECHL): The Maine Mariners are a professional ice hockey team in the ECHL set to begin play for the 2018–19 season.  Based in Portland, Maine, the team will play their home games at the Cross Insurance Arena.

Daniel Brière: Daniel Jean-Claude "Danny" Brière (born October 6, 1977) is a Canadian former professional ice hockey player and executive.  He was drafted in the first round of the 1996 NHL Entry Draft by the Phoenix Coyotes, and also played for the Buffalo Sabres, Philadelphia Flyers, Montreal Canadiens and Colorado Avalanche of the National Hockey League (NHL).  Internationally, Brière won four gold medals in as many appearances with Team Canada at the 1994 World U18 Championships, 1997 World Junior Championships, and the 2003 and 2004 World Championships.  He currently runs day to day operations for the upcoming Maine Mariners (ECHL).

Cleve Bryant: Cleve Bryant (born March 27, 1947) is a former American football player and coach.  He served as the head football coach at Ohio University from 1985 to 1989.  Bryant was later the Associate Athletics Director for Football Operations for the Texas Longhorns football team.  His responsibilities ranged from administrative operations to scheduling, as well as day-to-day operations of the football team and its facilities.  Bryant worked for Mack Brown at the University of North Carolina at Chapel Hill and followed Brown to the University of Texas at Austin in 1998.  Bryant was the wide receiver coach at Texas under John Mackovic from 1992 to 1994, before he joined Brown's staff at North Carolina.

Ken Kendrick: Earl G. "Ken" Kendrick Jr. is a baseball executive with the National League Arizona Diamondbacks.  He became part-owner with the team's inception in 1995 and Managing General Partner in 2004, overseeing day-to-day operations and acting as the organization’s designated representative when the Major League Baseball owners convene.

Clifton Brown: Clifton Brown (born August 29, 1976) is a retired Canadian Light Heavyweight Muay Thai Kickboxer of Jamaican descent, who fought out of Toronto, Ontario.  Clifton is the President/CEO of Warrior Caste Productions Inc.  A production company which focuses on Martial Arts through athlete documentaries, and day-to-day operations of MuayThai Premier League (The MPL).  He is the first Canadian in History to achieve the level of World Champion in the sport of MuayThai.  Clifton is also the first ever Canadian National team head coach.  During his competitive career, Clifton became World Champion five times holding titles with the IMTF(1x), WMC(3x), and IKKC(1x).

Matt Hershenson: At Danger, he served as SVP of Advanced Projects where he was responsible for day-to-day operations, hardware engineering, development and design.  Hershenson has also held positions at Google, working on the Android team alongside Playground and Danger co-founder Andy Rubin, as well as at Philips and Apple.

Supporting paragraphs: Daniel Brière Maine Mariners (ECHL)
Answer: Maine Mariners