LEWISTON — The Wreaths Across America convoy will stop at Lewiston High School on Sunday for a ceremony during its annual weeklong trek to Arlington National Cemetery to lay more than 250,000 Maine-made wreaths on the graves of veterans.

The convoy is expected to stop at the school at 156 East Ave. at 3:10 p.m. Sunday. The convoy will consist of 14 tractor-trailers filled with Christmas wreaths, a police escort and dozens of support vehicles.

This is the second time the caravan, which began in 2006, has stopped in Lewiston. Two years ago, it stopped at Thomas J. McMahon Elementary School, named for a local Medal of Honor recipient who died in the Vietnam War in 1969.

The high school will provide a much larger venue for people to attend.

“I think Lewiston High School is a great central location for people to come and see this,” Lewiston native Amber Caron, the communications director for Wreaths Across America, said.

Organizers are hoping that many people will line the route waving flags and signs to welcome the convoy to Lewiston.

Riding in the convoy once again is Gold Star Mother Joyce Richmond of Auburn. Her daughter, Chief Master Sgt. Denise (Grenier) Mikolajczyk, died in 2009 while on active duty in the Air Force. This is Richmond’s ninth year traveling with the convoy from Maine to Arlington National Cemetery.

The caravan will arrive in Lewiston via the Maine Turnpike, travel down Lisbon Street before turning on East Avenue to the high school by 3:10 p.m.

According to Assistant Principal Doug Dumont, who is helping organize the ceremony in the gymnasium, the hourlong ceremony will begin at 3:40 p.m. with welcoming remarks by school Principal Jon Radtke.

After the presentation of the colors, Lewiston High School senior Celia Gagnon will sing the national anthem.

Speakers include Jenny Lovering of Walmart and Lewiston Regional Technical Center Director Rob Callahan, who will introduce keynote speaker Shawn Chabot, a former teacher and administrator in the Lewiston school system who serves in the Army National Guard.

Also participating in the ceremony are the Lewiston High School/Lewiston Regional Technical Center Jr. ROTC Color Guard/Honor Guard, the high school Drumline and the high school Blue Notes Acapella Choral group.

Following the ceremony, the truck drivers and members of the convoy will eat dinner at The Green Ladle, a student-run restaurant that’s part of the culinary arts program at the technical center, next to the high school.

The convoy is scheduled to depart the high school at 6:10 p.m., travel down Webster, Sabattus and Main streets into Auburn, where it will travel down Court Street to Route 202 toward New Gloucester.

Referred to as the nation’s longest veterans’ parade, the mission of Wreaths Across America is to “remember the fallen, honor those that serve and their families and teach the next generation the value of freedom.”

The convoy begins Saturday at West Quoddy Head Lighthouse in Lubec. Others stops in Maine include Calais, Harrington, Milbridge, Ellsworth, South China, New Gloucester, Portland and Wells. It is scheduled to arrive at Arlington National Cemetery in Virginia on Saturday, Dec. 14.

According to Caron, more than 5,000 volunteers are expected to help place more than 262,000 wreaths on Arlington’s veterans’ graves.

Also on Dec. 14, wreaths will be placed on graves at 4,900 locations throughout the country in all 50 states.