David Cameron visit with Barack Obama: day one as it happened In a joint interview at half-time, the Prime Minister admitted that he was struggling the follow the quick moving game. It's pretty fast and furious. It's hard to follow sometimes exactly who's done what wrong," he said, adding that the President was helping to keep up with action and to fill out his brackets sheet. A laughing Mr Obama replied: "He's going to teach me cricket because I don't understand what's going on with that." Mr Cameron also used the nationally televised interview to promote the London Olympics, promising that Britain would be "rolling out the red carpet for the whole world." Everything is on time and on budget, all the stadia are built and everything's ready to go. We're just ready to welcome a lot of people to London," he said. Mr Obama said he was eager for Mr Cameron to meet the "wonderful folks" of the American heartland and to see more of the country than the coastal cities usually frequented by foreign visitors. He also joked that Mr Cameron had met a British student at the Ohio game, "so he had some constituencies here." 23.42: It's half-time now and the Leader of the Free World is having a little stretch. Expecting interview fairly soon. 23.10: BREAKING - PM and Potus have both eaten hot dogs, the pool reports. Cameron made the mistake last time he was in the US of eating a New York dog without any relish. 23.04: Dave paying close attention. Someone in the West Wing may be in trouble for allowing the President to wear a shirt that translates so badly onto the TV camera. Cameron and Obama in Ohio. Picture by Eugene. 22.56 The White House pool adds this: The president was greeted with loud cheers as he entered the arena with Mr Cameron and the rest of the entourage. The arena is not quite full, but it's a boisterous crowd. A White House official said Mr Cameron and Mr Obama spent the entire flight in the president's office on Air Force One, talking. In the early moments of the first-round game between Western Kentucky and Mississippi Valley State, the score is tied at 4. At times, Mr. Obama appeared to be explaining aspects of the game to Mr. Cameron as they sat huddled next to each other. 22.55 Our own Amy Willis is watching the game on TruTv - a bizarre American channel devoted mainly to conspiracy theories that somehow has obtained the rights to both the game and the half-time interview. 22.25: The game in Ohio has just started. The two leaders, looking supremely relaxed, are sitting in a stand with 500 Air Force family members whose loved ones are deployed overseas. Also with them are 20 students from the University of Dayton. 22.15: More from the White House pool: Air Force One landed at Wright-Patterson Air Force Base in Ohio at 5:42 p.m. Mr. Obama and Mr. Cameron were greeted on the tarmac by Ohio Gov. John Kasich and several other dignitaries. The president took off his jacket and spent several minutes shaking hands with a few dozen Air Force service members. As he departed, he shouted to them, "Keep up the good work!" They cheered and took photographs. The motorcade is moving at 6:02 p.m. heading for the University of Dayton arena for the NCAA Tournament game. 21.55: The game is expected to start in around half an hour, with the joint interview another half hour or so after that. 21.35: There's a bit of consternation in the US about Cameron's decision to wear jeans tonight. A little too casual and a little too trendy heading into America's Rust Belt? Say what you want but he looks more relaxed than this man: 21.20: Only a couple of hours after getting off his British Airways flight, Cameron is again airborn, this time heading for Ohio, where he will watch Mississippi Valley State and Western Kentucky University. Hopefully he's swotted up on their records because at half time he's doing an interview with CBS Sports on his impressions of the game. No doubt the Foreign Office has received assurances that he's not going to be asked to take three-point shot. 21.10: Here in the DC bureau, we've had a sudden burst of latent patriotism. Rule Britannia! is blaring, it's like last night of the proms. 20.55: The two leaders have reached Air Force One now but, somewhat amusingly, the ladder at the back of the helicopter has broken so President and Prime Minister had to scramble down the front. They're accompanied by: Jay Carney, the White House press secretary, Jack Lew, Mr Obama's chief of staff and Ed Llewellyn, the PM's chief of staff. 20.44: Andrew Woodcock, the Press Association's political editor, is onboard Air Force One, waiting for take off to Ohio. 20.36: And, as if by magic, we have our first pool report on their progress. A word on pool reports: since Kennedy's assassination there has always been a journalist travelling with the president, filing on his every movement in a report that goes to all White House correspondents. The reports are full of mind-numbing detail but on days like today they're very useful. This from the Wall Street Journal's Carol Lee. President Obama and Prime Minister Cameron left on Marine One from the Ellipse to Andrews AFB. Pool walked from the Palm Room to the Ellipse while POTUS and Cameron rode over in the motorcade, arriving at 4:15pm. The two leaders sat in one of the two SUVs adorned with British and American flags. The other SUV was packed with aides. Cameron, wearing blue jeans and a black long-sleeve shirt, carrying jacket, exited and waited a moment for POTUS to walk around from the other side of the SUV. POTUS is wearing his usual casual outfit - slacks, blue and white checkered shirt and light jacket. The two men chatted as they walked over to Marine One. Once at the foot of the stairs, POTUS patted Cameron on back, and the prime minister boarded first. 20.30: Seems like everything is running a little bit behind schedule. DC and BO were due to be back at Andrews by now en route to Wright-Patterson Air Force Base in Ohio. Not clear where they are at the moment. 20.20: While their husbands are watching basketball in Ohio, Michelle Obama and Samantha Cameron are heading to a mini-Olympics with school children from three schools in Washington DC. It's a joint celebration of the London 2012 Olympics and the Let's Move! programme - the First Lady's strategy to combat obesity among American children. It was announced today that Mrs Obama will head up the US delegation to the Olympics this summer. She follows in the steps of her predecessors Hillary Clinton and Laura Bush, who led the American delegations to the 1994 Winter Olympics in Lillehammer, Norway and the 2006 Winter Olympics in Torino, Italy respectively. 20.00: And here's some footage of that very fashionable arrival: 19.55: Samantha Cameron, long a champion of British fashion, has arrived flying the flag for UK designers. Our fashion team have had done a comparison Sam and Michelle's styles. 19.05: One of the highlights of the trip will be tomorrow's joint press conference at the White House. Normally the British press embarrasses the PM by asking about domestic politics but sometimes they get under the skin of the American president, too. Here's the beginning of the testy relationship between the BBC's Nick Robinson and and George W Bush. 19.00: Jon Swaine has been taking the temperature of the phone hacking story in the American media. The arrests of Rebekah and Charlie Brooks produced embarrassing media coverage for David Cameron on his arrival in Washington and raised fresh claims that Rupert Murdoch's empire may face legal trouble in America.