John Barros, a mayoral candidate and former top City Hall official, has garnered support from Dan Magoon, a Dorchester veteran who heads up a nonprofit focused on Gold Star families.

Barros, who served as former Mayor Marty Walsh’s chief of economic development, is one of six major candidates running for mayor after Walsh departed for President Joe Biden’s cabinet.

“As Chief of Economic Development, John ensured Veteran-owned businesses had selection priority for City contracts and procurement to support economic opportunity within the City of Boston,” Magoon said in an email to Barros supporters.

Magoon, a U.S. Army veteran, is the executive director of Massachusetts Fallen Heroes, a nonprofit based in Boston’s Seaport neighborhood.

Magoon’s support was announced on Friday in tandem with Barros’s plan for veterans. The plan calls for prioritizing employment benefits, tax relief and survivor benefits for Gold Star families. The post of commissioner of veterans services would become a mayoral cabinet position, according to the plan.

Barros also pledged to add a licensed clinician for veterans struggling with substance abuse, post-traumatic stress, traumatic brain injury, and military sexual trauma.

The other candidates running for mayor include Acting Mayor Kim Janey, City Councillors At-Large Annissa Essaibi George and Michelle Wu. District 4 Councillor Andrea Campbell and South End state Rep. Jon Santiago.