Not aluminum, aluminum that melts if it looks at a missile coming at it. But Trump made it clear that his complaints actually have nothing to do with efficiency or safety. “They say, ‘Oh, it’s stealth.’ That’s not stealth. In June, Navy Secretary John Phelan said Trump’s priorities for the military branch could be summed up as “shipbuilding, shipbuilding, shipbuilding,” a bid that sent defense contractors foaming at the mouth. Shipping experts have said Trump’s dream will likely cost billions of dollars—others say it is destined to fail.