Michael Tetreau returned to the scene of many of his father's high school gridiron triumphs to celebrate a victory of his own Monday night as he was sworn in as Fairfield's first selectman for his first full term.

The football field at Fairfield Warde High School is named in honor of Tetreau's father, Fern, a longtime football coach.

Issued the oath of office by U.S. Sen. Richard Blumenthal, D-Conn., Tetreau made sure to include musicians and singers from both Fairfield Warde and Fairfield Ludlowe high schools in the ceremony, underscoring the theme of his address.

"We need to act like we are one town," said Tetreau, who beat Republican Robert Bellitto Jr. and Independent Hugh Dolan for town government's top job in the Nov. 8 municipal election. "We need to get more people involved."

Tetreau, a Democrat who became interim first selectman in June after First Selectman Kenneth Flatto resigned to take a state administrative job, said the town needs to celebrate its diversity and "our strong sense of community."

He also thanked the voters who he said gave not only him, but all elected officials the opportunity "to lead the town."

Tetreau acknowledged that the years ahead won't be easy, particularly in light of the challenging economic conditions. It will require planning for the future, he said, and sticking to that plan.

Selectman Cristin McCarthy Vahey, Tetreau's running mate, also took her oath of office from Blumenthal, while Republican Selectman James Walsh was sworn in by state Sen. John McKinney, R-Fairfield.

Town Clerk Betsy Browne, who was unopposed in winning her third term, administered the oath of office to all the other elected officials, including 50 members of the Representative Town Meeting who came up on the stage district by district.

"What we witnessed here today is about 370 years of something unique," said Probate Judge Daniel Caruso. He and Fire Commission member Susan Barrett served as the emcees for the inauguration ceremonies.

"That's government by the consent of the governed," Caruso said. "This town depends so on each person in this town and the fate of our nation depends on what you and I do. We know that none of us can do it alone."