Sikorsky, a Lockheed Martin subsidiary, is funding a $5M to $6M granite helipad on the White House South Lawn to prevent damage from the new VH-92A Patriot Marine One helicopters.President Donald Trump says the pad will include a carved White House seal and will allow quicker access for state visits while sparing the grass from exhaust heat and powerful propulsion vents.Lockheed Martin says the contribution was made through the Trust for the National Mall, a nonprofit aligned with the National Park Service, and that the gift meets its ethics and compliance standards.The helipad joins a broader package of White House renovations that Mr. Trump is pursuing, including a new East Wing ballroom and landscaping changes that have prompted criticism and legal challenges from preservation groups.