President Donald Trump walked out to a thunderous standing ovation just ahead of the start of the UFC pay-per-view card at the Prudential Center, putting his public feud with tech billionaire Elon Musk on hold to instead watch the fierce battles inside the cage.

President Donald Trump signed three executive orders Friday regarding the use of drones and other aviation technologies. White House officials said the orders are in direct response to a string of bizarre sightings along the East Coast last year.

President Trump also eased restrictions on commercial drone flights and called for the revival of supersonic flights for nonmilitary aircraft.

President Donald Trump signed three executive orders on June 6, aimed at strengthening drone defences in the United States. This was done to promote the development of supersonic flight and remove barriers to the future use of flying cars.