London 2012 Olympics: You can wear Nike trainers, but leave the Pepsi T-shirt at home, says Lord Coe He added: "We have to protect the rights of the sponsors because they in a large part pay for the Games." Lord Coe questioned reports that police officers had been told to empty their crisps into plastic bags so they did not inadvertently advertise brands which are not sponsoring the Games. "I'm not even sure that that is an accurate portrayal of what will have happened," he said. Lord Coe also commented on the ongoing security issues that have blighted the Olympics. Failures by Games security contractor G4S have forced the Government to deploy an extra 3,500 military personnel to the Games, as well as hundreds of police officers. Lord Coe said: "This is not an issue that has remotely compromised security. This is actually about the supply and the mix. We've got the numbers to make sure this is a safe and secure games. Lord Coe dismissed Evan Davis's suggestion that a "negative narrative" had built up around the Olympics. He said: "I'm talking to people who think that they have come to a Games that has delivered in the areas that they need in a way that no Games has delivered before. He added: "Everywhere we go the reality of it is people are overwhelmingly very positive about what we are doing."