London terror attack: SAS 'Blue Thunder' unit 'lands in London Bridge following atrocity', The Independent

Elite unit established after 2015 Paris attacks 

SAS 'Blue Thunder' unit lands helicopter on London Bridge

London attack: Blue Thunder SAS unit explained - MyLondon

SAS 'Blue Thunder' unit lands helicopter on London Bridge

History of the Special Air Service - Wikipedia

Donald Trump hits out at Sadiq Khan and 'political correctness' after London Bridge terror attack, The Independent

London Bridge terror attack: Elite SAS troops deployed for first time on British streets - CoventryLive

SAS 'Blue Thunder' unit lands helicopter on London Bridge

What is Blue Thunder? SAS crack troops dropped on London Bridge terror scene by super-nimble helicopters - Mirror Online

No. 658 Squadron AAC - Wikipedia

SAS 'Blue Thunder' unit lands helicopter on London Bridge