Elon Musk's SpaceX, along with Palantir and Anduril, is a frontrunner to win a part of Trump's 'Golden Dome' missile defense shield.The partnership aims to build satellites to detect and track missiles, with potential for an attack satellite fleet.Trump's executive order highlighted missile attacks as a severe threat, driving interest in defense startups.Musk, a major Trump supporter, could play a significant role in the development of Golden Dome.The decision process for the project is still in its early stages and subject to changes.SpaceX proposed a unique subscription service model for Golden Dome to expedite deployment.There are concerns about relying on this subscription model for a critical defense program.SpaceX's involvement in Golden Dome could mark a major shift in defense contracting towards Silicon Valley.Other established contractors like Northrop Grumman and Boeing are also expected to be part of the process.SpaceX estimates the preliminary engineering work for the satellite constellation to cost between $6-10 billion.