President Donald Trump’s ambitious plan for a “Golden Dome” missile shield has picked up a bit of tarnish in the Rocket City.

The Defense Department has canceled a Huntsville industry summit designed to help small, nontraditional contractors compete for a share of billions of dollars in expected procurement around the president’s missile defense initiative. The event had been scheduled for June 11 at the Von Braun Center.

As of Wednesday afternoon it was still listed on the VBC’s upcoming events webpage.

The cancelation followed Trump’s announcement last month that the first $25 billion in funding would appear in the Defense budget that is being assembled now. The president has said the project would cost up to $175 billion and be in place by the end of his term. Both claims have come under questioning.

The Huntsville summit had been promoted by the Missile Defense Agency as a chance for defense firms to gain insight into Golden Dome’s needs and requirements as they consider whether to chase what could be multiple lucrative contracts. The MDA has said it plans a 10-year, $151 billion multiple-award contract vehicle in support of Golden Dome.

The Huntsville summit was particularly designed to reach out to small and nontraditional contractors, according to a notice posted to a federal procurement website announcing the event.

“Non-Traditional Contractors are highly encouraged to attend as MDA is extremely interested in ‘outside the box’ thinking and we believe that non-traditional contractors are vital to shaping the future of missile defense,” it stated.

An MDA spokesperson told AL.com they had no insight into why the event was canceled or whether nontraditional contractors remain a priority.

In an executive order issued in late January, Trump outlined a vision of a national missile defense program with a special emphasis on space-based programs.

Trump’s order borrowed its name from Israel’s Iron Dome missile defense program, a joint U.S.-Israeli venture designed to defend against relatively short-range rockets, missiles, and large drones. The name was changed to “Golden Dome” shortly after the announcement.

In contrast to the Israeli model, the United States has spent decades – and billions of dollars — developing missile defense at a larger scale: multi-layered systems designed to counter medium- and long-range ballistic missiles.

Building out new missile defense programs and expanding existing ones would likely boost Huntsville, which is home to numerous missile and space-focused firms, including most of the legacy prime contractors as well as defense-focused startups.