I have always enjoyed seeing representatives of the armed forces in uniform at Wimbledon. I have no idea if this is a perk or a duty but it seems right that they should be seen as important and accepted at British institutions such as Wimbledon. I hope that it is a perk and that they want to be there and are not there just as cheap security.
Although I didn't see any of them get involved when the streaker appeared the day before yesterday, there seemd to be quite a few Green Berets on the court yesterday when two comedians tried to play tennis on the centre court.