Hundreds of protesters are due to start marching from Lincoln to RAF Waddington against the use of armed drone aircraft.
It's the first time the Ministry of Defence has based the spy planes in the UK, which will be deployed over Afghanistan.
Today's march will start at South Park, down the A15 Cross O'Cliff hill and down Grantham Road to a Peace camp set up outside the airbase.
More top news
The Met Office has issued a yellow warning of wind for parts of the East and West Midlands as Storm Brian sweeps across the UK.
A man has been seriously injured after being stabbed in a carjacking in Birmingham.
A row has broken over a council's decision to spend £23,000 on welcome signs.