Running the BBC numbers for 2012
Along with every major event - like today's One Year To Go celebrations - comes the ceremonial Twitterstorm followed by media inquiries about how many people the BBC has covering it.
So as part of our occasional series in which we try to explain the real stories behind the headlines, here's what we're up to.
We're providing the global feed to international broadcasters from Trafalgar Square and the Olympic Aquatics Centre for the special programme going out on BBC One, BBC World and our radio services tonight.
These OBs are providing many of the pictures you may have seen already - such as the Breakfast and lunchtime outside broadcasts from Aquatics. We've deliberately given these a high technical specification to capture the event well.
But we're also using today as part of training and familiarisation for staff who will be working on the Olympics next year.
Access to the Park is extremely restricted in normal times, so today at minimal cost, we can give people experience of where they'll be in 2012 - and they can contribute to the output too.
We don't want July 27th next year to be the first day our key staff set foot on the site, because there's no planning opportunity better than being there for live output.
That's why our total number of domestic output staff on site is just over 150.
In return for that, though, we're getting huge amounts of programming across multiple outlets.
I mentioned Breakfast television, but you may also have heard Garry Richardson on Today or Nicky Campbell on 5 Live from the Olympic Park earlier. BBC Sport's World Swimming show is there - which is cheaper than sending it to Shanghai.
London's year to go story has attracted worldwide interest
We then have BBC London presenting its main 6.30 programme from Stratford, alongside pretty much all of their radio station BBC London 94.9.
If these and other shows were not in Olympic Park, the same people would be producing them from a location just a few miles away - but without the face-to-face contact with guests like Boris Johnson, Mark Foster or Jeremy Hunt.
Nobody would have batted an eyelid to hear Chinese radio was live from Beijing's newly-built stadiums, so it shouldn't be a surprise that our UK programmes are using this opportunity.
On top of this we're making the most of the Park access for our services which will have little or no accreditation in 2012. So a number of our World Service language colleagues are there, as is BBC World News which is an international commercial channel.
Their audiences are hungry for news about 2012 and today they can be at the heart of the action.
In the coming months, as our final numbers for 2012 firm up, I'll publish them here.
It's worth underlining that major events need significant numbers of people. We will, as ever, keep costs under control.
But today is about involving audiences and our staff with the London 2012 story, and with free access to the Park this isn't an occasion to needlessly restrain the broadcasting ambitions.