US President Donald Trump briefly mixed up Elon Musk's name during a speech at Joint Base Andrews in Maryland, referring to the billionaire as "Leon" before immediately correcting himself. The moment, captured on video, went viral and triggered a flurry of reactions on social media.Trump made the remark during an address to US Air Force service members after showcasing the new Air Force One aircraft. (Bloomberg)According to The Mirror US, the slip occurred as Trump addressed US Air Force service members after unveiling the new Air Force One aircraft.While speaking about Starlink, the satellite internet service operated by Musk's SpaceX,…