Ever since Valve started rolling out updates for
Team Fortress 2, John has been talking about the sniper update. John's theory was that when the sniper got their update I would be easy pickings for spies as there would be a lot of dumb snipers looking to score easy points and achievements (a field day for even the worst spy). Unfortunately for John it looks like Valve thought of that as well as the latest sniper
update will include a Razorback shield which will protect snipers from people like John. I'm interested to see how this is implemented as I'm hoping it's not something they can leave on all the time.