WASHINGTON (AP) — Hundreds of students from Marjory Stoneman Douglas High School arrived for the Washington, D.C. march on three flights donated by Delta Air Lines.

They’ll return to Florida with Delta after the march too.

The airline, which broke ties with the National Rifle Association after last month’s school shooting that left 17 dead, said they offered the round-trip charter flights “as part of our commitment to supporting the communities we serve.

After the shooting in Parkland, Delta said it would no longer offer discounted fares to NRA members to reflect its neutral status on the gun-control debate.

The move triggered a backlash from gun advocates, and the state of Georgia killed a proposed tax break on jet fuel in retaliation.