President #Obama's helicopter, #MarineOne departs Windsor Castle as a #BritishAirways jet passes overhead. #POTUS and #FLOTUS are having lunch with #QueenElizabethII, visiting 10 Downing Street to meet with British Prime Minister David Cameron and having dinner with Prince William, Prince Harry and the Duchess of Cambridge at Kensington Palace | April 22, 2016 | 📷: Ian Gavan (iangav) | #GettyImages #UK #London #Photobomb #PhotooftheDay #✈️