Junead and Shazib KhanImage copyrightCPS
Junead and Shazib Khan
A delivery driver from Luton has been convicted of plotting to kill a US airman outside a base in East Anglia.
Junead Khan, a supporter of so-called Islamic State (IS), was found guilty of preparing terrorist acts.
Khan had driven past RAF Lakenheath and other bases on his delivery route, and had discussed staging a car crash and attacking a soldier with a knife.
He was also convicted of preparing to join IS in Syria. His uncle Shazib Khan was also convicted of the same charge.
BBC home affairs correspondent Daniel Sandford said the attack planned by Junead Khan was similar to the killing of Fusilier Lee Rigby in Woolwich in 2013.
How Islamic State group supporters targeted the UK
Police said he planned to stage a car crash outside an airbase and then use a knife to attack a member of the US military.
He had also done extensive research on how to make a bomb, said Commander Dean Haydon of the Metropolitan Police's Counter Terrorism Command.
In July 2015, Junead Khan had an encrypted online conversation with Junaid Hussain, a British IS operative in Syria.
Junaid Hussain
The US military said Junaid Hussain's online activity meant he could "reach across the sea" to inspire violence
He was sent instructions on how to build a bomb and was told to use it against police if they arrived on the scene of his planned attack.
Days after this online conversation he carried out internet research into buying a large knife - but was then arrested at his workplace.
The following month Junaid Hussain was killed in a US missile strike - one of only a few British IS operatives who have been targeted in this way.
Sue Hemming, head of the counter terrorism division of the Crown Prosecution Service, said: "Through early detection and prosecution of these individuals more serious crimes have been avoided which could have had devastating consequences in the UK or Syria."
The verdicts came after a six-week trial at Kingston Crown Court.
The men were remanded in custody and will be sentenced on 13 May.
US airmen terror attack: Junead Khan found guilty - BBC News